LEVER OP TRANSMITTAL. 
Unirep States DEPARTMENT OF AGRICULTURE, 
Bureau or CHEMISTRY, 
Washington, D. C., April 11, 1908. 
Sir: [ have the honor to submit for your approval the results of 
certain investigations made by the Chief of the Miscellaneous 
Laboratory of this Bureau in regard to the injury to vegetation 
and animal life observed in the vicinity of certain smelters, par- 
ticularly one located at Anaconda, Mont. This report covers one 
of a series of such investigations dealing with the injury caused 
by smelter wastes, which have been conducted in this Bureau from 
time to time during the past six years, with a view to cooperating 
with the Bureau of Forestry in the preservation of the forests and 
protecting the farming interests. I recommend that this report be 
published as Bulletin 113 of the Bureau of Chemistry. 
Respectfully, 
OW. “Wan. 
: Chief of Bureau. 
Hon. James Wi1son, 
Secretary of Agriculture. 
