LETTER OF TRANSMITTAL 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
BUREAU OF CHEMISTRY, 
Washington, D. C., February 15, 1910. 
Str: I have the honor to submit for your approval the results of 
a series of investigations made by the chief of the miscellaneous 
division of this bureau in regard to the injury to vegetation and ani- 
mal life observed in the vicinity of certain smelters, particularly one 
located at Anaconda, Mont. The original report was issued in May, 
1908, and has now been revised to include a second investigation 
subsequently conducted at Anaconda. These studies have been made 
in this bureau from time to time during the past eight years in coopera- 
tion with the Bureau of Forestry in the preservation of the forests and 
the protection of the farming interests. I recommend that this report 
be published as Bulletin 113, Revised, of the Bureau of Chemistry. 
Respectfully, 
H. W. WILeEy, 
Chief of Bureau. 
Hon. JAMES WILSON, 
Secretary of Agriculture. 
