Email Record: Letter from the Secretary of War, transmitting, with a letter from the Acting Chief of Engineers, reports on preliminary examinations of Hudson River, N. Y., with a view to increasing the width of the channel between the Albany and Greenbush Bridge and the New York Central & Hudson River Railroad Passenger Bridge and of Hudson River, N. Y., with a view to securing a suitable depth along the front of Rensselaer between the lower and middle bridges.