38 MISC. PUBLICATION 198, U.S. DEPT. OF AGRICULTURE 
GossarpD, H. A.—Continued. (470) 
ENTOMOLOGICAL SURVEY OF OHIO WHEAT FIELDS—HESSIAN FLY. Ohio Agr. 
Expt. Sta. Monthly Bull. 2 (9) (whole no. 21): 284285. 1917. 
Slight infestation in 12 Ohio counties. 
(471) 
THE WHEAT-INSECT SURVEY OF 1918—-HESSIAN FLY INFESTATION. Ohio Agr. 
Expt. Sta. Monthly Bull. 3 (9) @vhole no. 38): 262, illus. 1918. 
Iniestation in northwestern Ohio. 
and Parks, T. H. (472) 
OHIO WHEAT SURVEY. Jour. Hcon. Ent. 12: 60. 1919. 
Discussion of wheat survey in reiation to fly and different species of joint- 
worms. 
(473) 
WHEAT INSECT SURVEY OF 192I—SOME HESSIAN FLY IN NORTHWESTERN OHIO, 
ETC. Ohio Agr. Expt. Sta. Monthly Bull. 6: 108-110, illus. 1921. 
Report on efforts to prevent fly damage; percentage of infestation; map 
showing safe seeding dates. 
and Parks, T. H. (474) 
HESSIAN FLY PREVENTION. Jour. Econ. Ent. 14: 53-60. 1921. (Reprinted, 
with variations, in Ohio Agr. Expt. Sta. Monthly Bull. 6 (5-6) (whole nos. 
65-66): 67-76. 1921. 
Preliminary work of 1919 and 1920, with results from late sowing cam- 
paigns; method for discovering seeding ‘date; October egg laying; summary; 
discussion. 
and Parks, T. H. (475) 
HESSIAN FLY CONTROL IN 1921 AND 1922. Ohio Agr. Expt. Sta. Monthly Bull. 
7: 160-167, illus. 1922. 
Report of control measures, with tables; map of average percentage of 
infested straws. 
Gort, B. (476) 
NOTES OF THE YEAR. Ent. Soc. Ontario, Ann. Rpt. 9: 55. 1879. 
Brief account of occurrence of f fly in 1877. 
GRANTHAM, A. E. (477) 
HESSIAN FLY. Pract. Farmer 112: 296. 1916. 
Control. 
Gray, C. W. See WHITEHEAD, C. 
GRAY. 32 B: (478) 
FLY-PROOF WHEAT. Farmers’ Cabinet 5: 388. 1841. 
Describes wheat said to be fly proof. 
GREAT BRITAIN BOARD OF AGRICULTURE AND FISHERIES. (479) 
HESSIAN FLY (CECIDOMYIA DESTRUCTOR). [Gt. Brit.] Min. Agr. and Fisheries 
Leaflet 125, 3 pp., illus. 1904. 
Plants attacked; description; life history; treatment. 
(480) 
REPORT ON THE OCCURRENCE OF INSECT AND FUNGUS PESTS ON PLANTS IN 
ENGLAND AND WALESIN THE YEAR1917. [Gt. Brit.] Min. Agr. and Fisheries 
Misc. Pub. 21, 32 pp. 1917. 
Fly in Sensation variety of wheat. 
GREEN, G. A., ARMSTRONG, W. A., and others. (481) 
HESSIAN FLY NoTES. Amer. Ent. 3: 21. 1880. 
Effect of fertilizing; discussion on late sowing. 
GREEN, J. (482) 
ON THE FLY IN WHEAT. Amer. Farmer 4 (23): 188. 1822. 
Correspondence regarding injury by fly in Culpeper County, Va.; identity 
of insect uncertain. 
