LETTER OF TRANSMITTAL. 
United States Department of Agriculture, 
Division of Entomology, 
Washington, D. C, February 20, 1898. 
Sir: I have the honor to transmit herewith manuscript of a bulletin 
which gives an account of the spread of the San Jose scale in the 
United States during the last two years and of the work which has 
been done by economic entomologists in the effort to subdue it. I 
recommend that it be published as Bulletin No. 12, new series, of this 
division. 
Eespectfully, L. O. Howard, 
Entomologist. 
Hon. James Wilson, 
Secretary of Agriculture. 
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