EATON VANCE INCOME FUND OF BOSTON
Supplement to Prospectus dated February 1, 1999
The following replaces the Organization section on Page 5 of the prospectus.
ORGANIZATION. The Fund is a Massachusetts business trust. The Fund offers
multiple classes of shares. Each class represents a pro rata interest in the
Fund, but is subject to different expenses and rights. Effective July 1, 1999,
the shares offered in this prospectus are Class A shares. The Fund does not hold
annual shareholder meetings, but may hold special meetings for matters that
require shareholder approval (like electing or removing trustees, approving
management contracts or changing investment policies that may only be changed
with shareholder approval).
July 1, 1999 IBPS
