§4 MISC. PUBLICATION 198, U.S. DEPT. OF AGRICULTURE 
Swenx, M. H.—Continued. (1068) 
INSECT CONTROL—HESSIAN FLY. Nebr. Agr. Expt. Sta. Ann. Rpt. 37: 22-23. 
1924. 
Counties infested; control; observations on daily counts of emergence; 
safe-seeding dates, with results. 
(1069) 
HESSIAN FLY CONTROL IN NEBRASKA. Nebr. Crop Growers’ Assoc. Ann. 
Rpt. (1923-24) 15: 86-98. 1924. 
History, distribution and control of fly in Nebraska. 
(1070) 
HESSIAN FLY CONTROL IN NEBRASKA. Nebr. State Bd. Agr. Ann. Rpt. 
1923: 286-298, illus. 1924. 
Early appearance in America; distribution and history of outbreak in 
Nebr.; 1923 conditions; life history; control; effect of climatic conditions; 
conference on 1923 situation; establishment of and method of conducting 
field station, with result of observations: safe-seeding dates and results. 
See also BrunzER, L. 
Symons, T. B. (1071) 
INSECTS AFFECTING THE WHEAT—THE HESSIAN FLY (MAYETIOLA DESTRUCTOR 
say). Md. Agr. Expt. Sta. Bull. 101: 165-167, illus. 1905. 
Brief general account. 
and Cory, E. N. 
(1072) 
MISCELLANEOUS INSECT PESTS. Md. Agr. Expt. Sta. Bull. 175: 175-176. 
1913. 
Brief popular account; control by late sowing; table of sowing dates for 
various localities. 
T., A. R., et al. (1073) 
WHEAT AND HESSIAN FLY. Rural New Yorker 60: 537, 5538. 1901. 
Notes on conditions from various localities. 
TALBERT, D..J. (1074) 
SOME WORK OF THE EXTENSION ENTOMOLOGIST IN KANSAS AND MISSOURI. 
Jour. Econ. Ent. 9: 287-290. 1916. 
Report of some practical demonstrations on control; description of fly 
campaign in Missouri. 
THEOBOLD, F. V. (1075) 
SOME NOTABLE INSTANCES OF THE DISTRIBUTION OF INJURIOUS INSECTS BY 
ARTIFICIAL MEANS. Sci. Prog. Twentieth Cent. 1: 69-70. 1906. 
Introduction of the fly into America; not a serious pest in pele, 
natural enemies. 
.THOMAS, C. (1076) 
[HESSIAN FLY.] Ill. State Ent. Rpt. 9: 3. 1880. 
Mentions injury caused by fly. 
77) 
PROTECTION AGAINST HESSIAN FLY. Ind. Hort. Soc. Trans. 1881: 81. 1882. 
Brief discussion of control. 
(1078) 
BEST MEANS OF COUNTERACTING INSECT FOES. III. State. Hort. Soc. Trans. 
(n.s.) 15: 44. 1881. 
Note on control. 
See also Ritey, C. V., et al. 
THOMPSON, J. (1079) 
HESSIAN FLY CONTROL. Wallace’s Farmer 58: 386, illus. 1933. 
THOMPSON, W. R. (1080) 
LES CONDITIONS DE LA RESISTANCE DES INSECTES PARASITES INTERNES 
DANS L’ORGANISME DE LEURS HOTES. Compt. Rend. Soc. Biol. [Paris] 
77: 562-564. 1915. 
Observations on development of Polygnotus minutus Lindm, in fly. 
