LETTER OF TRANSMITTAL. 
U. S. Department of Agriculture, 
Bureau of Entomology, 
Washington, D. C, Novembers, 1911. 
Sir: I have the honor to transmit herewith for publication as 
Bulletin 102 of the Bureau of Entomology a report on " Natural 
Control of White Flies in Florida/' by Drs. A. W. Morrill and E. A. 
Back, both of whom were formerly employed as special field agents 
in this bureau. 
The control of the citrus white flies in Florida by natural means, 
most important among which are the fungous diseases of these 
insects and natural insect enemies, is a subject of much importance 
to the Florida citrus grower. In connection with the investigation 
of the white fly in Florida a good deal of time has been devoted to this 
special subject, and the results are here summarized. This investi- 
gation has been under the general direction of Mr. C. L. Marlatt, 
assistant chief of this bureau, and has been carried out by the authors 
named with the assistance and cooperation of Mr. E. L. Worsham, 
now State entomologist of Georgia, and Mr. W. W. Yothers. 
Respectfully, 
L. O. Howard, 
Entomologist and Chief of Bureau. 
Hon. James Wilson, 
Secretary of Agriculture. 
