WASHINGTON, _May 29, 1850_.
_To the Senate of the United States:_
I transmit to the Senate a copy of a dispatch from the minister of the
United States at London, together with the memorial and other documents
addressed to the Senate and House of Representatives of the United
States by Count de Bronno Bronski which accompanied it, relative to an
improved breed of silkworms which he desires to have introduced into
this country.