WASHINGTON, _May 4, 1866_.
_To the Senate and House of Representatives_:
Referring to my message of the 12th of March last, communicating
information in regard to a proposed exposition of fishery and water
culture at Arcachon, in France, I communicate a copy of another dispatch
from the minister of the United States in Paris to the Secretary of
State, and again invite the attention of Congress to the subject.