== LETTER OF TRANSMITTAL. 
U. S. DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY, 
Washington, D. C., January 17, 1895. 
Str: I have the: honor to transmit herewith a revised edition of 
Farmers’ Bulletin No. 19, a condensed account of the more important 
insecticides for farm and garden use, prepared under my direction by 
Mr. C. L. Marlatt, first assistant entomologist. As stated in my letter 
of transmittal to the first edition, cireular No. 1, new series, of this 
division, contained information of this character, but this document is 
out of print, and since it was published some advance has been made 
in the matter of insecticides which necessitates the publication of some 
additional matter and some change in the methods of preparation of 
old and standard mixtures. The constant call for information of this 
character will warrant the publication of this bulletin in large edition. 
Respectfully, ; 
; L. O. Howarn, Entomologist. 
Hon. CHAS. W. DABNEY, Jr., 
Acting Secretary of Agriculture. 8 
