EARTH SCIENCES INC
POS AM, 1998-04-17
MINERAL ROYALTY TRADERS
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As filed with the Securities and Exchange Commission on April 17, 1998
                              Registration No.  333-35135
===========================================================================
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                                       
                        POST-EFFECTIVE AMENDMENT No. 1
                                      TO
                                   FORM S-3
                                       
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                       
                             Earth Sciences, Inc.
             (Exact name of registrant as specified in its charter)
                                       
              Colorado                                84-0503749
      (State of incorporation)              (IRS Employer Identification No.)
                                       
                910 12th Street, Golden, Colorado        80401
          (Address of principal executive offices, including Zip Code)
                                       
    (Registrant's telephone number, including area code):   (303) 279-7641

                               Mark H. McKinnies
                   910 12th Street, Golden, Colorado  80401
                                (303) 279-7641
           (Name, address, including zip code and telephone number,
             including area code, of agent for service of process)
                                       
APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC------------: 
As soon as practicable after the effective date of this Registration
Statement.  1,726,417  Shares registered hereunder are being withdrawn from
this Registration Statement.  The remaining 50,000 shares will continue to be
offered for sale by the Selling Shareholder.

If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the
following box. [   ]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box.  [ X ]

If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [   ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [   ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.
  [   ]

<PAGE>                   1


CALCULATION OF REGISTRATION FEE
______________________________________________________________________________
                                                  Proposed
Title of each                      Proposed       maximum
class of                           maximum offer- aggregate      Amount of
securities to be    Amount to be   ing price per  offering       registration
registered          registered     share          price          fee
______________________________________________________________________________
Common Stock, $.01
par value:
 Issued and out-
  standing        399,750 Shares  $ 2.35 (1)      $  939,413(1)  $  284.67
 Issuable upon
  conversion of
  Debentures    1,326,667 Shares  $ 1.50 (2)      $1,990,000(2)  $  944.75
 Issuable upon
  exercise of
  options          50,000 Shares  $ 2.50 (3)      $  125,000(3)  $   37.88
______________________________________________________________________________
Totals          1,776,417 Shares                  $3,054,413     $1,267.30
______________________________________________________________________________

(1)  Based on the average price of the Common Stock on NASDAQ's  SmallCapSM
Market on September 5, 1997. The resulting fee is calculated pursuant to
section (c) of Rule 457 of Regulation C.
(2)  Based on the maximum number of shares that could be issued pursuant this
Registration Statement and the terms of the Debentures with respect to the
conversion price. The resulting fee is calculated pursuant to section (g) of
Rule 457 of Regulation C using a price of $2.35 per share.
(3)  Based on the weighted average exercise price of the options. The
resulting fee is calculated pursuant to section (g) of Rule 457 of Regulation
C.

The fee was paid September 8, 1997.

THIS POST EFFECTIVE AMENDMENT TO THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR ON
SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A), MAY
DETERMINE.

<PAGE>                        2

Common Stock Removed From Registration

The offering of 1,776,417 shares of common stock, par value $.01 per share
(the "Common Stock") of Earth Sciences, Inc. (the "Company") registered with
the Securities and Exchange Commission (the "SEC") pursuant to a registration
statement on Form S-3, declared effective November 19, 1997, File No. 333-
35135 (the "Registration Statement") is hereby amended.  Of the 1,776,417
shares registered for sale thereunder, 1,726,417 shares have either been sold
or withdrawn from sale.  Accordingly, pursuant to this post-effective
amendment, the Company hereby amends its Registration Statement to remove such
1,726,417 shares of Common Stock from registration with the SEC under the
Securities Act of 1933, as amended.  The remaining 50,000 shares registered
under the Registration Statement shall continue to be available for sale by
the Selling Shareholder named in such Registration Statement.

The PROSPECTUS is hereby amended to read as follows:
Dated April 17, 1998


                             EARTH SCIENCES, INC.
                         50,000 SHARES OF COMMON STOCK

      All  of  the shares of Common Stock, par value $0.01 per share  ("Common
Stock")  of  Earth  Sciences , Inc., a Colorado corporation  (the  "Company"),
offered  hereby are being offered for resale by a certain selling  shareholder
(the  "Selling  Stockholder") as described more  fully  below  under  "SELLING
STOCKHOLDER".   The  shares  of Common Stock offered  hereby  by  the  Selling
Stockholder  consist of 50,000 shares issuable upon exercise of options  at  a
price $1.50 per share.  See "SELLING STOCKHOLDER".

      The  Selling  Stockholder will offer its Common   Stock  through  or  to
securities brokers or dealers designated by it in the over-the-counter  market
or in other transactions negotiated by the Selling Stockholder.  Any such sale
of  Common Stock by the Selling Stockholder must be accompanied by, or  follow
the  delivery  of,  a  prospectus filed with a current registration  statement
relating  to  the  Common Stock being offered, unless the Selling  Stockholder
elects  to  rely  on  Rule  144  or another exemption  from  the  registration
requirements  in  connection  with  a  particular  transaction.   The  Selling
Stockholder  and  any  broker, dealer, or agent  that  participates  with  the
Selling Stockholder in the sale of Common Stock  offered hereby may be  deemed
"underwriters" within the meaning of the Securities Act of 1933, as amended  (
the  "Securities Act"), and any commission or discounts received by  them  and
any  profit on the resale of the Common Stock purchased by them may be  deemed
to  be  underwriting  commissions  under the  Securities  Act.  (See  "SELLING
STOCKHOLDER" and "PLAN OF DISTRIBUTION").

The  Company's  Common Stock is traded in the over-the-counter market  and  is
quoted on NASDAQ's  SmallCapSM Market ("Nasdaq") under the symbol "ESCI".   On
April  3, 1998, the closing price of the Common Stock on Nasdaq was $1.50  per
share.


THE  ACQUISITION AND OWNERSHIP OF THE COMMON STOCK INVOLVE A  HIGH  DEGREE  OF
RISK.  THE COMMON STOCK SHOULD BE PURCHASED ONLY BY INVESTORS WHO ARE ABLE  TO
AFFORD  THE  RISK  OF  LOSS OF THEIR ENTIRE INVESTMENT.  (SEE  "RISK  FACTORS"
BEGINNING ON PAGE 6 OF THIS PROSPECTUS).

THESE  SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES  AND
EXCHANGE  COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED  UPON  THE
ACCURACY  OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE  CONTRARY
IS A CRIMINAL OFFENSE.

<PAGE>                        3


                        Price        Offering       Proceeds to   Proceeds to
                        to Public(1) Commissions(2) Selling       Company(3)
                                                    Stockholder

By Selling Stockholder
  Per Share  .......     $    1.50    $    --         $   1.50      $   --
  TOTAL   ..........     $  75,000    $    --         $ 75,000      $   --

(1)  The price per share for the securities offered by the Selling Stockholder
is  estimated at the closing sales price quoted by Nasdaq for the Common Stock
at  $1.50  on  April 3, 1998.  The Common Stock may be offered at the  current
market  price,  which may vary through the period during which the  securities
may  be  offered, or at such other prices as may be negotiated by the  Selling
Shareholder and the purchaser at the time of sale.
(2)   The  securities to be sold by Selling Stockholder may be sold by  it  or
through  or  to  securities brokers or dealers, which sales  may  involve  the
payment of commissions by the Selling Stockholder.
(3)   Does  not  reflect  expenses of this offering  payable  by  the  Company
estimated at $6,000 nor the receipt by the Company of approximately $75,000 on
exercise of options.  (See "PLAN OF DISTRIBUTION" below).

      The  Company will not receive any proceeds from the sale of Common Stock
by  the Selling Stockholder. However, the Company would receive proceeds  upon
exercise  of  options held by the Selling Stockholder prior  to  the  sale  of
Common  Stock  issuable  on  such  exercise.  (See  "USE  OF  PROCEEDS").   In
connection with this offering, the Company estimates that it will incur  costs
of approximately $6,000 for legal, accounting, printing, and other costs.  Any
separate costs of the Selling Stockholder will be borne by it.  Commissions or
discounts  paid  in  connection with the sale of  securities  by  the  Selling
Stockholder  will  be determined by negotiations between it  and  the  broker-
dealer  through  or  to  which the securities are to  be  sold  and  may  vary
depending on the broker-dealers' commission or mark up schedule, the  size  of
the transaction, and other factors.  (See "PLAN OF DISTRIBUTION" below.)

       The   Selling  Stockholder  and  any  broker,  dealer,  or  agent  that
participates  with  the Selling Stockholder in the sale of  the  Common  Stock
offered  hereby  may  be  deemed "underwriters"  within  the  meaning  of  the
Securities Act of 1933, as amended ( the "Securities Act"), and any commission
or discounts received by them and any profit on the resale of the Common Stock
purchased  by  them  may  be deemed to be underwriting commissions  under  the
Securities Act. (See "SELLING STOCKHOLDER" and "PLAN OF DISTRIBUTION").

AVAILABLE INFORMATION
The  Company  is  subject  to  the reporting requirements  of  the  Securities
Exchange  Act  of  1934,  as  amended, and accordingly  files  reports,  proxy
statements, and other information with the Securities and Exchange  Commission
(the  "Commission").   Such reports, proxy statements, and  other  information
filed  with  the  Commission are available for inspection and copying  at  the
public  reference facilities maintained by the Commission at  Room  1024,  450
Fifth Street N.W., Judiciary Plaza, Washington, D.C.  20549, and at certain of
the  Commission's regional offices located at Northwestern Atrium Center,  500
West  Madison Street, Suite 1400, Chicago, Illinois  60604; and 7 World  Trade
Center,  New  York,  New York  10048, upon payment of the  charges  prescribed
therefor by the Commission.

The  Company  is  also  subject to the electronic filing requirements  of  the
Commission.  The commission maintains a Web site that contains reports,  proxy
and  information statements, and other information regarding issuers that file
electronically.  The address of the Web site is http://www.sec.gov.

The  Common  Stock  of the Company is currently traded in the over-the-counter
market  and  is quoted on NASDAQ, SmallCap Market.  Reports, proxy  statements
and  other information filed by the Company therewith can be inspected at  the
National  Association  of  Securities  Dealers,  Inc.  1735  K  Street   N.W.,
Washington , D.C.  20006.

<PAGE>                        4

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
The  following  documents  filed by the Company (File  No.  0-6088)  with  the
Commission are incorporated herein by reference.
      1.   The  Company's  annual report on Form 10-KSB  for  the  year  ended
December 31, 1997 ("1997 10-KSB").
      2.  A  description  of  the  Company's Common  Stock  contained  in  the
Registration Statement on Form 8-A as declared effective by the Securities and
Exchange Commission.
      3.  All documents filed by the Company pursuant to Section 13(a), 13(c),
14 and 15(d) of the Exchange Act subsequent to the date of this Prospectus and
prior  to the termination of the offering of the Common Stock shall be  deemed
to  be  incorporated by reference into this Prospectus and to be a part hereof
from the date of filing of such documents.

Any   statement  contained  in  a  document  incorporated  or  deemed  to   be
incorporated by reference herein shall be deemed to be modified or  superseded
for  purposes  of  this  Prospectus to the extent that a  statement  contained
herein  or in any other subsequently filed document which also is or is deemed
to  be incorporated by reference herein modifies or supersedes such statement.
Any such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Prospectus.

The  Company  will  provide  without charge  to  each  person,  including  any
beneficial  owner,  to whom a Prospectus is delivered, upon  written  or  oral
request  of  such  person, (i) a copy of the Company's  annual  and  quarterly
reports as filed with the Commission, and/or (ii) a copy of any or all of  the
documents  which are incorporated by reference herein, other than exhibits  to
such  documents which are not specifically incorporated by reference  therein.
The  annual reports on Form 10-KSB include audited financial statements of the
Company.   Requests  should  be directed to Earth  Sciences,  Inc.,  910  12th
Street,  Golden,  Colorado  80401,  Attention:  Investor Relations  (telephone
303-279-7641).

_________________________________

No person is authorized to give any information or make any representation not
contained  in  this prospectus and, if given or made, such information  should
not be relied upon as having been authorized.

THE COMPANY
Earth Sciences, Inc. (the "Company") is a diversified mineral exploration  and
development company specializing in chemical processing, air pollution control
and mineral exploration.  Production of purified phosphate products in Calgary
commenced  in  June  1997.  The Company was incorporated  under  the  name  of
Colorado Central Mines, Inc. in Colorado in 1957.  Current activities  of  the
Company  include (1) the operation of its recently modified solvent extraction
facility  in  Calgary, Alberta for production of purified phosphate  products;
(2)  continued  exploration  activities for  gold  and  diamond  resources  in
Venezuela  (3)  flue  gas conditioning technology for coal-fired  boilers  and
other applications provided through ADA Environmental Solutions LLC ("ADA"), a
majority-owned  subsidiary, and (4) maintenance of  its  position  in  several
mineral resources and prospects in the Western US.

The  Company's  solvent  extraction facility in  Calgary,  Alberta,  recovered
uranium  from  phosphoric  acid  during the period  from  1983  through  1987.
Uranium  oxide production was suspended in the fall of 1987 when the  adjacent
fertilizer  plant  from which the facility received its feed  stock  suspended
operations.   The  contract under which the uranium was sold was  modified  in
1990  to  allow  unrestricted alternative use of the facility. Revamp  of  the
facility  to allow production of purified phosphate products was completed  in
1997.  The  Calgary facility is routinely producing technical grade phosphoric
acid and steps are underway for production of food grade product targeted  for
the  end of the second quarter in 1998. Production and sales of products  have
been  increasing  monthly as the Company establishes and  expands  its  market
position.   The  Company  intends to pursue the  recovery  of  other  valuable
elements in the feed stock once routine production and cash flow are achieved.
Initial  investigation of such recovery potential is estimated to cost between
$20,000-$50,000 and is expected to be funded out of internally generated  cash
flow.

<PAGE>                        5

The principal executive offices of the Company are located at 910 12th Street,
Golden, Colorado  80401, and its telephone number is (303) 279-7641.

FORWARD-LOOKING STATEMENTS

In  addition  to  historical information, this Prospectus  and  the  documents
incorporated  herein  by  reference contain forward-looking  statements.   The
forward-looking statements contained herein are subject to certain  risks  and
uncertainties that could cause actual results to differ materially from  those
in the forward-looking statements.  Factors that might cause such a difference
include, but are not limited to, those discussed in the section entitled "RISK
FACTORS" set forth below.  Investors are cautioned not to place undue reliance
on  these forward-looking statements, which reflect management's analysis only
as  of  the date of such statements.  The Company undertakes no obligation  to
publicly  revise  these  forward-looking  statements  to  reflect  events   or
circumstances that arise after the date of such statements.

RISK FACTORS
An investment in the Shares is speculative and involves a high degree of risk.
In  analyzing  the  offering, prospective investors should  read  this  entire
Prospectus and the information incorporated herein by reference, and carefully
consider,  among others, the following risk factors in addition to  the  other
information set forth elsewhere in this Prospectus.

Specifics Risks Related to the Company
No  Dividends.  The Company has paid no cash dividends on its Common Stock and
has  no  present intention of paying cash dividends in the foreseeable future.
It  is the present policy of the Board of Directors to retain all earnings  to
provide  for  the  growth of the Company.  Payments of cash dividends  in  the
future  will  depend, among other things, upon the Company's future  earnings,
requirements for capital improvements, the operating and financial  conditions
of the Company and other factors deemed relevant by the Board of Directors.

Lack  of Profitability.  While the Company reported net income in fiscal 1995,
the  Company's operating history has resulted in losses from operations in the
fiscal years ending December 31, 1988 through 1994, in 1996, and 1997.   While
certain  of  the Company's operations may be profitable during a given  fiscal
year,  the  Company's  operations  as a  whole  may  be  unprofitable  due  to
exploration  and  development costs on properties from  which  no  revenue  is
derived,  to  continuing  corporate general and administrative  costs  and  to
interest expense associated with long term debt.

Dilutive Effect of Issuance of Additional Shares on Current Shareholders.  The
Board  of  Directors  has the authority to authorize the  offer  and  sale  of
additional  securities without the vote of or notice to existing shareholders,
and  it  is likely that additional securities will be issued to provide future
financing  or  in  connection with acquisitions.  The issuance  of  additional
securities could dilute the percentage interests and per share book  value  of
existing  shareholders,  including  persons  purchasing  securities  in   this
offering.

Volatility  of  Price for Common Stock.  The market price for  shares  of  the
Company's  Common Stock may be highly volatile depending on news announcements
or changes in general market conditions.  In recent years the stock market has
experienced extreme price and volume fluctuations.

Risks Related to the Exploration and Development of Minerals
Nature  of Mineral Exploration and Development; No Proven Commercially  Viable
Reserves Yet Discovered on the Company's Mineral Properties.  Exploration  for
minerals  is highly speculative and may involve greater risks than many  other
businesses.   Many  exploration  programs, including  those  which  have  been
conducted by the Company, do not result and have not resulted in the discovery
of  mineralization and any mineralization discovered may not be of  sufficient
quantity or quality to be profitably mined.  The Company's mineral exploration
and  development  activities are subject to all of the operating  hazards  and
risks normally incident to such activities, such as encountering unusual or
<PAGE>                        6
unexpected formations, environmental pollution, personal injury and  flooding.
All  of  these  factors may result in losses in relation to the amounts  spent
which  are  not  recoverable.  With the exception of the San  Luis  gold  mine
(where   mining  operations  have  been  terminated  as  described  below   in
"Termination  of  Mining at the San Luis Gold Mine"), no  commercially  viable
reserves have yet been discovered on the Company's mineral properties.

Competition and Scarcity of Mineral Lands.  Many companies and individuals are
engaged  in  mineral exploration and development, including large, established
mining  companies  with  substantial capabilities and long  earnings  records.
There  is  a  limited  amount of desirable mineral lands available  for  claim
staking, lease or other acquisition in the United States ("US"), Venezuela and
other  areas where the Company contemplates conducting exploration activities.
The  Company  may  be  at  a  competitive disadvantage  in  acquiring  mineral
properties since it must compete with these individuals and companies, many of
which  have greater financial resources and larger technical staffs  than  the
Company.   From  time  to  time,  specific properties  or  areas  which  would
otherwise  be  attractive to the Company for exploration  or  acquisition  are
unavailable due to their previous acquisition by other companies.

Fluctuation  in  the  Price  of Minerals.  The market  price  of  minerals  is
extremely  volatile and beyond the control of the Company.   Gold  prices  are
generally influenced by basic supply/demand fundamentals.  The market dynamics
of  supply/demand can be heavily influenced by economic policy, i.e.,  central
banks  sales/purchases,  political  unrest,  conflicts  between  nations,  and
general  perceptions about inflation.  Fluctuating metal  prices  may  have  a
significant  impact on the Company's results of operations and operating  cash
flow.   Furthermore, if the price of a mineral should drop  dramatically,  the
value  of  the Company's properties which are being explored or developed  for
that  mineral could also drop dramatically, and the Company might not be  able
to  recover  its investment in those properties.  The decision to put  a  mine
into  production, and the commitment of the funds necessary for that  purpose,
must  be made long before the first revenues from production will be received.
During  the  last  five years, the average annual market  price  of  gold  has
fluctuated  between  $280  per ounce and $384 per ounce.   Price  fluctuations
between  the  time  that  such  a decision is made  and  the  commencement  of
production  can change completely the economics of the mine.  Although  it  is
possible  to  protect  against  price  fluctuations  by  hedging  in   certain
circumstances, the volatility of mineral prices represents a substantial  risk
in  the  mining  industry generally which no amount of planning  or  technical
expertise  can eliminate.  The Company is not involved in, nor does it  expect
to enter into any hedging activities

Environmental  Controls.  Compliance with environmental  quality  requirements
and  reclamation  laws  imposed  by  federal,  state,  provincial,  and  local
governmental  authorities  may necessitate significant  capital  outlays,  may
materially  affect  the economics of a given property, or may  cause  material
changes or delays in the Company's intended activities.  The Secretary of  the
Interior  has  directed  the BLM to propose amendments to  surface  management
regulations   that   impose  more  stringent  reclamation  and   environmental
protection  requirements on mining operations.  The extent of the changes,  if
any,  which  may be made by the BLM is not presently known, and the  potential
impact on the Company as a result of future regulatory action is difficult  to
predict.  New or different environmental standards imposed by any governmental
authority in the future may adversely affect the Company's activities.

Uncertainty of Title.  Several of the Company's mining properties which are in
the  United States are unpatented mining claims to which the Company, or those
under  which the Company holds its rights, has only possessory title.  Because
title to unpatented mining claims is subject to inherent uncertainties, it  is
difficult  to  determine  conclusively ownership  of  such  claims.   Since  a
substantial portion of all mineral exploration, development and mining in  the
United  States  now  occurs on unpatented mining claims, this  uncertainty  is
inherent in the mining industry.  In addition, in order to retain title to  an
unpatented  mining claim, a claim holder must have met annual assessment  work
requirements ($100 per claim) through September 1, 1992 and must have complied
with  stringent  state and federal regulations pertaining  to  the  filing  of
assessment work affidavits.  Moreover, after September 1, 1992, the  right  to
locate or maintain a claim generally is conditional upon payment to the United
States  of  a  rental fee of $100 per claim per year for each assessment  year
instead  of  performing assessment work.  State law may,  in  some  instances,
still require performance of assessment work.

<PAGE>                   7

The  present  status of the Company's properties as unpatented  mining  claims
located on public lands of the U.S. allows the claimant the exclusive right to
mine  and  remove  valuable minerals, such as precious  and  base  metals  and
industrial  minerals, found therein, and also to use the surface of  the  land
solely for purposes related to mining and processing the mineral-bearing ores.
However, legal ownership of the land remains with the U.S.  Accordingly,  with
an  unpatented claim, the U.S. retains many of the incidents of  ownership  of
land,  the U.S. regulates use of the surface, and the Company remains at  risk
that  the  claims  may  be forfeited either to the U.S. or  to  rival  private
claimants due to failure to comply with statutory requirements as to locations
and  maintenance  of  the  claims.  If there  exists  a  valuable  deposit  of
locatable  minerals (which is the requirement for the unpatented claim  to  be
valid  in  the  first  place),  and  provided  certain  levels  of  work   and
improvements have been performed on an unpatented mining claim, the Mining Law
of  1872 authorizes claimants to then seek to purchase the full title  to  the
claim,  thereby  causing  the  claim to become the  private  property  of  the
claimant.  Such full ownership expands the claimant's permissible uses of  the
property (to any use authorized for private property) and eliminates the  need
to  comply  with maintenance and reporting requirements necessary  to  protect
rights in an unpatented claim.  At present there is a statutory moratorium  in
effect  prohibiting the Department of Interior from accepting  and  processing
new  applications for purchase of fee title to mining claims.  The  moratorium
is likely to continue indefinitely but does not affect the ability to hold and
develop valuable deposits by means of unpatented mining claims.

Proposed  Legislation  Affecting the Mining Industry.  For  the  last  several
Congressional  sessions, bills have been repeatedly  introduced  in  the  U.S.
Congress which would supplant or radically alter the provisions of the  Mining
Law  of  1872.   As of March 31, 1998, no such bills have passed,  although  a
number  of  differing  and sometimes conflicting bills are  now  pending.   If
enacted,  such  legislation could substantially increase the cost  of  holding
unpatented mining claims and could impair the ability of companies to  develop
mineral  resources on unpatented mining claims.  Under the  terms  of  certain
proposed  legislation,  the  ability  of  companies  to  obtain  a  patent  on
unpatented  mining  claims  would  be  nullified  or  substantially  impaired.
Moreover,  certain forms of such proposed legislation contain  provisions  for
the  payment  of royalties to the federal government in respect of  production
from unpatented mining claims, which could adversely affect the potential  for
development  of such claims and the economics of operating existing  mines  on
federal  unpatented mining claims.  The Company's financial performance  could
therefore  be  affected  adversely by passage  of  such  legislation.   It  is
impossible  to predict at this point what any legislated royalties  might  be,
but a potential three to four percent gross royalty, assuming a gold price  of
$300  per ounce, would have an approximated $9 to $12 per ounce impact on  the
Company's costs of any production from unpatented mining claims.

Uncertainty  of Funding for Exploration.  The Company has funded much  of  its
exploration  and  acquisition activities through joint  venture  arrangements,
which  minimize  the cost of such activities to the Company and  allow  it  to
explore and acquire a greater number of properties than it would otherwise  be
able  to explore or acquire on its own.  The Company has also funded a portion
of  its  exploration activities without joint venture participation, resulting
in increased costs to the Company.  The Company has been successful in raising
such  funds for its exploration activities.  Additional funding from  existing
partners  or third parties, however, may be necessary to conduct detailed  and
thorough  evaluations  of, and to develop certain properties.   The  Company's
ability  to  obtain this financing will depend upon, among other  things,  the
price  of  gold and the industry's perception of its future price.  Therefore,
availability  of  funding is dependent largely upon  factors  outside  of  the
Company's control, and cannot be accurately predicted.  The Company  does  not
know from what sources it will derive any required funding.  If the Company is
not able to raise additional funds (as to which there can be no assurance), it
will not be able to fund certain exploration activities on its own.

Uncertainty of Development and Operating Property Economics and Ore Grades  at
Development   Properties.   Decisions  as  to  whether  any  of  the   mineral
development properties which the Company now holds or which it may acquire  in
the  future contain commercially minable deposits, and whether such properties
should  therefore be sold or brought into production, depend upon the  results
of exploration programs and/or feasibility analyses and the recommendations of
duly qualified engineers or geologists.
<PAGE>                        8
Such  decisions  involve consideration and evaluation of  several  significant
factors,  including, but not limited to, the (a) costs of bringing a  property
into  production, including exploration and development work,  preparation  of
production feasibility studies and construction of production facilities,  (b)
availability  and  costs of financing, (c) ongoing costs  of  production,  (d)
market prices for the mineral to be produced, and (e) the amount and grades of
reserves or mineralized material.  There can be no assurance that any  of  the
development  properties now held by the Company, or which may be  acquired  by
the Company, contains a commercially minable mineral deposit, and therefore no
assurance  that the Company will ever generate a positive cash flow  from  the
sale  of  or  production operations on such properties. In  addition,  once  a
property  is  sold  with a retained royalty or placed into  production,  risks
still exist that the amount and grade of its reserves will not actually be  as
predicted.   To  the extent that lower amounts and/or grades of  reserves  are
experienced,  costs  per  unit  produced and profitability  can  be  adversely
affected.  Depending upon the extent of such an effect in any of the Company's
properties, the Company could incur a writedown on its investment in any  such
property.

Termination of Mining at the San Luis Gold Mine.  Royalty income from the  San
Luis  gold mine has been the only significant source of income for the Company
during the period from 1990 through 1996.  The mine was leased to and operated
by  Battle  Mountain Gold Co. ("BMGC").  As reported to the Company  by  BMGC,
mining  was  completed  at the end of October, 1996.   The  Company's  royalty
income from the property ceased shortly after that time.

Risks  Related to the Production and Sale of Purified Phosphate  Products  and
ADA

Uncertain  Commercial  Viability of Solvent Extraction Process.   The  solvent
extraction  process  developed by the Company for the production  of  purified
phosphoric  acid ("PPA") has not been proven on a continuing commercial  basis
at the Calgary plant.  Although the Company has performed numerous bench-scale
and  pilot  plant  test of the process, there can be no  assurances  that  the
process  will  yield  satisfactory  results  when  employed  on  a  continuing
commercial scale.

Limited  Experience in Marketing Industrial Chemicals and  Lack  of  Long-term
Sales  Contracts.  The growth and profitability of operations at the Company's
solvent  extraction facility in Calgary will be dependent  upon,  among  other
things,  the sale of purified phosphate products to chemical distributors  and
customers.   The  Company  has  limited  experience  in  marketing  industrial
chemicals  and is relying on consultants and others to initiate  and  maintain
sales contacts.  PPA is not typically sold under long-term contracts, and  the
Company  does  not  have  any long-term commitments to  purchase  its  planned
products.   There can be no assurances that the Company will be successful  in
its future sales efforts.

Supply  of  Raw Materials. The growth and profitability of operations  at  the
Company's solvent extraction facility in Calgary will be dependent upon, among
other  things,  the  availability of sufficient raw  materials  at  reasonable
prices.   The  Company has negotiated a renewable annual supply contract  with
Farmland  Industries ("Farmland") and a supply arrangement  with  Agrium  U.S.
Inc.  ("Agrium")  to supply the estimated requirement of superphosphoric  acid
("SPA").   The contract with Farmland contains provisions that allow extension
of  the  contract  in the future or termination upon a 90 day written  notice.
There  can  be  no  assurances that the Company will be able  to  extend  this
contract  and  supply  arrangement  in the  future  and/or  obtain  sufficient
quantities of SPA at reasonable prices.

Ability  to  Expand Geographically. The growth and profitability of operations
at  the  Company's  solvent extraction facility in Calgary will  be  dependent
upon,  among  other things, the ability to become the predominate supplier  of
PPA in the geographic region surrounding Calgary and on the US West Coast, and
to  sell on an increasing basis to the Minneapolis/Chicago area.  There can be
no assurance that the Company's efforts to expand sales can be accomplished on
a profitable basis.

Competition.   The  Company's purified phosphate  products  will  be  sold  in
markets  that  are  highly  competitive.  The  principal  competitive  factors
include product quality, price and distribution capabilities.  There can be no
assurances  that  the  Company  will be able to compete  successfully  against
current  and  future  competitors based on these factors.   The  Company  will
compete with several domestic and
<PAGE>                        9
international  producers, many of whom have substantially  greater  financial,
production, distribution and marketing resources than the Company.   Increased
competition  could  result in price reductions, reduced margins  and  loss  of
market  share,  all  of  which could have a material  adverse  affect  on  the
Company's business, financial condition and results of operations.

Effect of Potential Lack of Demand for ADA's Services.  If there is no demand,
or  the  demand  is  less  than projected, for ADA's  services  for  flue  gas
conditioning, the Company will not recognize the synergies expected  from  its
acquisition,  because ADA will not be able to utilize the  Company's  purified
phosphate products.

THE OFFERING

 Common Stock outstanding prior to the offering  ..... 19,989,589 Shares
 Common Stock offered by the Selling Stockholder......     50,000 Shares (1)
 Common Stock to be outstanding after the offering  .. 20,039,589 Shares (2)
- -----------------------------------
(1)   The 50,000 shares of Common Stock offered by the Selling Stockholder all
represent   shares issuable on exercise of options for gross proceeds  to  the
Company of $75,000, if all such options were exercised.
(2)  Includes up to 50,000 shares of Common Stock issuable on the exercise  of
outstanding options at an exercise price of $1.50 per share.

USE OF PROCEEDS

The  options held by the Selling Stockholder must be exercised into  shares  of
Common  Stock  prior to the resale of the Common Stock offered by  the  Selling
Stockholder pursuant to this offering.  Proceeds received by the Company on the
exercise of outstanding options, totaling $75,000, if all options held  by  the
Selling  Stockholder are exercised, will be used by the Company to pay  general
and  administrative expenses, to the extent not funded from operating  revenue,
and for additional working capital.  There can be no assurances that any of the
outstanding options will be exercised to provide any proceeds therefrom to  the
Company.

SELLING STOCKHOLDER

The  following  table  provides certain information, as of  the  date  of  this
prospectus, respecting the Selling Stockholder, the shares of Common Stock held
by  it  or  to  be  held,  to be sold, and to be held following  the  offering,
assuming  the  sale by the Selling Stockholder of all Shares  of  Common  Stock
offered.

                                                               Shares Owned
                 Securities Owned Prior to the Offering (1)  After Offering (1)
                    Common                   Shares to
Selling Stockholder Stock (2)    Options (3) be Offered      Number       %
_______________________________________________________________________________
World Capital
 Funding, Inc. (4)  24,647        50,000         50,000      24,647       *
_______________________________________________________________________________
  Totals            24,647        50,000         50,000      24,647       *
===============================================================================
* Less than one percent
(1) Shares owned prior to the offering include all shares of Common Stock owned
by the Selling Stockholder.  Shares owned after the offering assume the sale of
all shares of Common Stock offered pursuant to this offering.
(2)  Represents shares held by the Selling Stockholder not offered in this
offering.
(3)  Represents options to purchase 50,000 shares of Common Stock at an
exercise price of $1.50 per share.
(4)  Keith Mazer is the President and controlling shareholder of World Capital
Funding, Inc.


<PAGE>                        10

PLAN OF DISTRIBUTION

This  Prospectus relates to the public offer and sale by a certain  shareholder
(the  "Selling  Stockholder") of 50,000 shares of Common Stock of  the  Company
issuable on exercise of options.

The  Common Stock to be sold by the Selling Stockholder may be sold by it  from
time  to  time directly to purchasers.  Alternatively, the Selling  Stockholder
may, from time to time, offer the Common Stock through dealers or brokers,  who
receive  compensation in the form of commissions from the  Selling  Stockholder
and/or the purchasers of the Common Stock for whom they act as agents.   As  of
the  date hereof, the Selling Stockholder has not advised the Company  that  it
has  entered into any agreement or understanding with any dealer or broker  for
the  offer or sale of the Common Stock.  The Selling Stockholder may enter into
such  agreements or understandings in the future.  The Selling Stockholder  may
also  offer  some  or  all of the Common Stock through market  transactions  on
Nasdaq,  on  which the Company's Common Stock is traded.  Sales of  the  Common
Stock  through  brokers  may be made by any method  of  trading  authorized  by
Nasdaq,  including block trading in negotiated transactions.  Without  limiting
the  foregoing, such brokers may act as dealers purchasing any or  all  of  the
Common  Stock  covered  by  this Prospectus.  Sales of  Common  Stock  are,  in
general, expected to be made at the market price prevailing at the time of each
such  sale; however, prices in negotiated transactions may differ considerably.
The  Selling Shareholder has not advised the Company that it anticipates paying
any  consideration,  other  than usual and customary broker's  commissions,  in
connection with sales of the Common Stock.  The Selling Stockholder  is  acting
independently  of the Company in making decisions with respect to  the  timing,
manner and size of each sale.

DESCRIPTION OF COMMON STOCK

The  authorized capital stock of the Company consists of 25,000,000 shares  of
Common  Stock,  $0.01 par value per share.  All of the issued and  outstanding
stock of the Company is fully paid and nonassessable.  Holders of Common Stock
are  entitled  to  receive dividends, when and if declared  by  the  Board  of
Directors,  out of funds legally available therefore and to share  ratably  in
the  net  assets of the Company upon liquidation.  Holders of Common Stock  do
not  have preemptive rights to subscribe for additional shares, nor are  there
any  redemption or sinking fund provisions associated with the  Common  Stock.
There  are  currently 19,989,589 shares of Common Stock outstanding  owned  by
approximately 3,000 persons and/or entities.

Holders  of  Common Stock are entitled to one vote per share  on  all  matters
requiring  a vote of the shareholders.  Since the Common Stock does  not  have
cumulative  voting rights in electing directors, the holders of  more  than  a
majority of the outstanding shares of Common Stock voting for the election  of
directors can elect all of the directors whose terms expire that year, if they
so choose.

LEGAL MATTERS
Certain  legal matters with respect to the legality of the securities  offered
hereby and the organization and existence of the Company have been passed upon
for  the  Company by Parcel, Mauro & Spaanstra, P.C., 1801 California  Street,
Suite 3600, Denver, Colorado  80202.

EXPERTS
The  consolidated financial statements which are incorporated by reference  in
this  prospectus by reference from the Company's Annual Report on Form  10-KSB
for  the  year ended December 31, 1997, have been audited by Hein + Associates
LLP,  certified  public  accountants, as stated in  their  report,  which  are
incorporated  herein by reference, and have been so incorporated  in  reliance
upon such report given the authority of that firm as experts in accounting and
auditing.

<PAGE>                        11
PART II
INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

      The  following  table  sets forth the various expenses  payable  by  the
Registrant  in  connection with the sale and distribution  of  the  securities
being  registered.   All  of the amounts shown are estimated  except  for  the
Securities and Exchange Commission registration fee.  The Selling Stockholders
will not be paying any of these expenses.

          SEC registration fee          $ 1,267.30
          Printing and mailing expenses $   500.00
          Legal fees and expenses       $ 2,000.00
          Accounting fees and expenses  $ 2,000.00
                                      ------------
          Total                         $ 5,767.30
          ========================================


Item 15.  Indemnification of Directors and Officers.

      Article  7-109  of the Colorado Business Corporation Act authorizes  the
indemnification of directors and officers against liability incurred by reason
of  being  a  director  or officer and against expenses (including  attorney's
fees), judgments, fines and amounts paid in settlement and reasonably incurred
in connection with any action seeking to establish such liability, in the case
of third-party claims, if the officer or director acted in good faith and in a
manner he reasonably believed to be in or not opposed to the best interests of
the  corporation,  and  in the case of actions by  or  in  the  right  of  the
corporation, if the officer or director acted in good faith and in a manner he
reasonably  believed  to be in or not opposed to the  best  interests  of  the
corporation  and  if  such officer or director shall not  have  been  adjudged
liable   to   the   corporation,   unless  a   court   otherwise   determines.
Indemnification  is  also authorized with respect to any  criminal  action  or
proceeding  where  the  officer or director also had no  reasonable  cause  to
believe his conduct was unlawful.

      The above discussion of the Colorado Business Corporation Act is only  a
summary and is qualified in its entirety by the full text of the foregoing.

Article VIII of the Registrant's Bylaws provides as follows:

      Each  past,  present and future director and officer of the  corporation
shall  be indemnified by the corporation against all expenses, penalties,  and
liabilities, including attorneys' fees, reasonably incurred by or imposed upon
him  in  connection  with any actual or threatened claim,  demand,  action  or
proceeding,  whether civil or criminal, or in connection with  any  settlement
thereof,  to which he may be made a party, or in which he may become involved,
by  reason  of  his  being  or  having been  a  director  or  officer  of  the
corporation,  whether  or not he is a director or officer  at  the  time  such
expenses,  penalties or liabilities are incurred, except  in  cases  where  he
shall  be  finally  adjudged in such action or proceeding  to  be  liable  for
willful  misconduct  in  the performance of his duties  as  such  director  or
officer.   The right of indemnification herein provided shall be  in  addition
to,  and  not exclusive of, all other rights to which such director or officer
may  be entitled and the right of indemnification herein provided shall  inure
to  the  benefit  of  the personal representatives of deceased  directors  and
officers.


<PAGE>                        12

Item 16.  Exhibits.

Exhibit
Number              Description
3.1            Amended  and  Restated Certificate  of  Incorporation  of  the
                 Company (1)
3.2            Bylaws of the Company, as amended  (2)
4.1**          Specimen Common Stock Certificate
5.1**          Opinion of by Parcel, Mauro & Spaanstra, P.C. as to legality of
                 the shares
23.1*          Consent of Hein + Associates LLP
23.2**         Consent  of by Parcel, Mauro & Spaanstra, P.C.  (contained  in
                 Exhibit 5.1)

*  Filed herewith.
**  Previously filed.
- ------------------------------------------------------------------------------
(1)  Incorporated by reference from the Company's Annual Report on Form 10-KSB
for the year ended December 31, 1996.
(2)  Incorporated by reference from the Company's Annual Report on Form 10-KSB
for the year ended December 31, 1993.

Item 17.  Undertakings.

     The undersigned registrant hereby undertakes:
      (1)  To file, during any period in which offers or sales are being made,
a  post-effective  amendment to this registration  statement  to  include  any
material  information with respect to the plan of distribution not  previously
disclosed  in  the  registration statement or  any  material  change  to  such
information in the registration statement.
      (2)   That,  for  the  purposes of determining any liability  under  the
Securities  Act of 1933 (the "Act"), each such post-effective amendment  shall
be  deemed  to  be  a  new registration statement relating to  the  securities
offered  therein, and the offering of such securities at that  time  shall  be
deemed to be the initial bona fide offering thereof.
      (3)   To remove from registration by means of a post-effective amendment
any  of the securities being registered which remain unsold at the termination
of the offering.
      (4)   That,  for purposes of determining liability under the  Act,  each
filing  of the registrant's annual report pursuant to section 13(a) or section
15(d)  of  the  Securities Exchange Act of 1934 (and  where  applicable,  each
filing  of an employee benefit plan's annual report pursuant to section  15(d)
of  the Securities Exchange Act of 1934) that is incorporated by reference  in
the  registration statement shall be deemed to be a new registration statement
relating  to  the  securities  offered  therein,  and  the  offering  of  such
securities  at that time shall be deemed to be the initial bona fide  offering
thereof.
     (5)  That, insofar as indemnification for liabilities arising under the
Act may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable.  In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the
Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with
the securities being registered, the Registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by
it is against public policy as expressed in the Act and will be governed by
the final adjudication of such issue.

<PAGE>                   13

SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, as  amended,
the Registrant hereby certifies that it has reasonable grounds to believe that
it  meets  all of the requirements for filing on Form S-3 and has duly  caused
this  Registration Statement and any amendment thereto to  be  signed  on  its
behalf  by the undersigned, thereunto duly authorized, in the City of  Golden,
State of Colorado on April 16, 1998.

                              EARTH SCIENCES, INC.


Date:  April 16, 1998         /s/  Ramon E. Bisque
                              -----------------------------------------------
                              Ramon E. Bisque
                              Principal Executive Officer

Date:  April 16, 1998         /s/  Mark H. McKinnies
                              -----------------------------------------------
                              Mark H. McKinnies
                              President, Principal Financial and
                              Accounting Officer

      Pursuant to the requirements of the Securities Exchange Act of 1933,  as
amended, this Registration Statement and any amendment thereto has been signed
below by the following persons in the capacities and on the dates indicated.

Date: April 16, 1998          /s/  Ramon E. Bisque
                              -----------------------------------------------
                              Ramon E. Bisque, Director

Date: April 16, 1998          /s/  Duane N. Bloom
                              -----------------------------------------------
                              Duane N. Bloom, Director

Date: April 16, 1998          /s/  Michael D. Durham
                              -----------------------------------------------
                              Michael D. Durham, Director

Date: April 16, 1998          /s/  Robert H. Lowdermilk
                              -----------------------------------------------
                              Robert H. Lowdermilk, Director

Date: April 16, 1998          /s/  Mark H. McKinnies
                              -----------------------------------------------
                              Mark H. McKinnies, Director

<PAGE>                   14
                                                                  Exhibit 23.1
                                                                              
                         INDEPENDENT AUDITOR'S CONSENT
                                       
We  consent  to the incorporation by reference of our report dated  March  24,
1998  accompanying the financial statements of Earth Sciences,  Inc.  to  Post
Effective  Amendment No. 1 to Form S-3 Registration Statement, File  No.  333-
35135,  of  Earth Sciences, Inc. and to the use of our name and the statements
with  respect  to  us,  as  appearing  under  the  heading  "Experts"  in  the
Registration Statement.

/s/  Hein + Associates LLP
HEIN + ASSOCIATES

Denver, Colorado
April 14, 1998


<PAGE>                   15




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