LETTER OF TRANSMITTAL. 
U. S. DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY, 
Washington, D. C., July 8, 1896. 
Str: I transmit herewith the manuscript of a report upon insects 
affecting domestic animals in the United States. This report has been 
prepared by Prof. Herbert Osborn, of the Zoological Department of the 
State Agricultural College at Ames, Iowa. Professor Osborn was a 
field agent of this Division for some years prior to 1893, and was 
engaged, during part of the time of his employment by the Depart- 
ment, in the preparation of this report. As explained in the prefatory 
statement, it was the intention of Professor Riley to collaborate with 
Professor Osborn in this work, but other duties interfered. The 
report, in its present condition, is largely the result of work done by 
Professor Osborn, under a special commission from the Department 
during the past winter. The chapter on remedies has been carefully 
read and revised by Dr. D. E. Salmon, chief of the Bureau of Animal 
Industry. The report will form an excellent text-book of the subject, 
and is a work which, in the opinion of the writer, should be in the 
hands of all stock raisers. J recommend its publication as Bulletin No. 
5, new series, of this Division. 
Respectfully, L. O. HOWARD, 
Entomologist. 
Hon. J. STERLING MORTON, 
Secretary of Agriculture. 
