8 BULLETIN 1137, TJ. S. DEPARTMENT OF AGRICULTURE. 
LITERATURE CITED. 
(1) McKinney, H. H. 
1923. Investigations on the rosette disease of wheat and its control- 
In Jour. Agr. Research, v. 23, no. 10. [In press.] 
(2) Osborn, Herbert. 
1898. The Hessian fly in the United States. U. S. Dept. Agr., Div. 
Ent. Bui. 16, n. s., 58 p., 8 fig., front., 2 pi. Bibliography, p. 48-57. 
(3) Phillips, W. J. 
1920. Studies on the life history and habits of the jointworm flies of 
the genus Harmolita (Isosoma), with recommendations for control. 
U. S. Dept. Agr. Bui. 808, 27 p., 8 fig., 6 pi. 
(4) Webster, F. M. 
1903. Some insects attacking the stems of growing wheat, rye, barley,, 
and oats. U. S. Dept. Agr., Div. Ent. Bui. 42, 62 p., 15 fig. 
(5) 1920. The Hessian fly and how to prevent losses from it. U. S. Dept. 
Agr., Farmers' Bui. 1083, 16 p., 13 fig. 
ORGANIZATION OF THE UNITED STATES DEPARTMENT OF 
AGRICULTURE. 
Secretary of Agriculture Henry C. Wallace. 
Assistant Secretary C. W. Pugsley. 
Director of Scientific Work E. D. Ball. 
Director of Regulatory Work 
Weather Bureau Charles F. Marvin, Chief. 
Bureau of Agricultural Economics Henry C. Taylor, Chief. 
Bureau of Animal Industry John R. Mohler, Chief. 
Bureau of Plant Industry William A. Taylor, Chief. 
Forest Service W. B. Greeley, Chief. 
Bureau of Chemistry Walter G. Campbell, Acting Chief* 
Bureau of Soils Milton Whitney, Chief. 
Bureau of Entomology L. O. Howard, Chief. 
Bureau of Biological Surrey E. W. Nelson, Chief. 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Division of Accounts and Disbursements A. Zappone, Chief. 
Division of Publications John L. Cobbs, Jr., Chief. 
Library Claribel R. Barnett, Librarian. 
States Relations Service ' A. C. True, Director. 
Federal Horticultural Board C. L. Marlatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration 1 Chester Morrill, Assistant to the 
Grain Future Trading Act Administration J Secretary 1 . 
Office of the Solicitor R. W. Williams, Solicitor. 
This bulletin is a contribution from the — 
Bureau of Plant Industry William A. Taylor, Chief. 
Office of Cereal Investigations Carleton R. Ball, Cerealist in 
Charge. 
Bureau of Entomology L. O. Howard, Chief. 
Office of Cereal and Forage Insect In- 
vestigations W. R. Walton, Entomologist in 
Charge. 
WASHINGTON : GOVERNMENT PRINTING OFFICE : 1923 
