LETTER OF TRANSMITTAL. 
U. 8. Department of Agriculture, 
Bureau of Entomology, 
Washington, D. C, January 15, 1909. 
Sir: I have the honor to recommend for publication as Bulletin 78 
of this Bureau the accompanying manuscript entitled "Economic Loss 
to the People of the United States Through Insects that Carry 
Disease." 
The United States is just awakening to a knowledge of the disas- 
trous results following a lack of appreciation of the danger arising 
from the unchecked development of mosquitoes and the typhoid fly, 
and it is hoped that this bulletin will not only emphasize this danger, 
but will also lend support to movements, both local and widespread, 
toward the destruction (often so easy) of these carriers of disease. 
Kespect fully, 
L. O. Howard, 
Entomologist and Chief of Bureau. 
Hon. James Wilson, 
Secretary of Agriculture. 
