UNITED STATES DEPARTMENT OF AGRICULTURE 
BUREAU OF BIOLOGICAL SURVEY 
WASHINGTON, D. C. 
March 4, 1907. 
Dear Brewster: 
Your letter of February 26 addressed to the Hon. James Wilson, 
Secretary of Agriculture, has been referred to me for reply. 
I have read your letter with great interest and pleasure and 
wish to thank you in the name of the Biological Survey, and also 
personally, for the strong and comprehensive statement you have 
made in our behalf. Of the multitude of more or less similar 
letters which have come to hand during the past two or three weeks, 
yours covers the ground most completely and shows the greatest famil 
iarity with the work we are doing and its relation to practical agri 
culture. 
It means a good deal for a busy man to take time to write 
such a letter as this and we wish to express our appreciation of it. 
We shall use your letter in a report we are instructed to prepare 
for the next Congress. 
With renewed thanks, 
Mr. William Brewster, 
Cambridge, Mass. 
