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SIGNATURE CAROLE LAIBLE
TITLE
The Board of Trustees
Domini Social Index Portfolio
In planning and performing our audit of the financial statements of Domini
Social Index Portfolio as of and for the year ended July 31, 1999, we considered
its internal control, including control activities for safeguarding securities,
in order to determine our auditing procedures for the purpose of expressing our
opinion on the financial statements and to comply with the requirements of Form
N-SAR, not to provide assurance on the internal control.
The management of the Fund is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, errors or irregularities
may occur and not be detected. Also, projection of any evaluation of internal
control to future periods is subject to the risks that it may become inadequate
because of changes in conditions or that the effectiveness of the design and
operation may deteriorate.
Our consideration of the internal control would not necessarily disclose all
matters in the internal control that might be material weaknesses under
standards established by the American Institute of Certified Public Accountants.
A material weakness is a condition in which the design or operation of one or
more of the internal control components does not reduce to a relatively low
level the risk that errors or irregularities in amounts that would be material
in relation to the financial statements being audited may occur and not be
detected within a timely period by employees in the normal course of performing
their assigned functions. However, we noted no matters involving the internal
control and its operation, including controls for safeguarding securities, that
we consider to be material weaknesses as defined above as of July 31, 1999.
This report is intended solely for the information and use of management, the
Board of Trustees and the Securities and Exchange Commission.
/s/ KPMG LLP
Boston, Massachusetts
August 25, 1999
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<PERIOD-END> JUL-31-1999
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<INVESTMENTS-AT-VALUE> 1,345,626,734
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