A6 MISC. PUBLICATION 198, U.S. DEPT. OF AGRICULTURE 
Hopkins, A. D.—Continued. (573) 
PERIODICAL EVENTS AND NATURAL LAW AS GUIDES TO AGRICULTURAL RESEARCH 
ae es U.S. Monthly Weather Rev. Sup. 9, 42 pp., illus. 1918. 
.B. 648. 
Comprehensive technical discussion of Hopkins’ bioclimatic law, with 
detailed application to fly control. 
(574) 
THE BIOCLIMATIC LAW AS APPLIED TO ENTOMOLOGICAL RESEARCH AND FARM 
PRACTICE. Sci. Monthly 8: 509-513. 1919. 
General discussion of application of bioclimatic law to fly control; rela- 
tion of law to farm practice. Isophanal maps and calendar of wheat seed- 
ing dates. 
(575) 
THE BIOCLIMATIC LAW. Jour. Wash. Acad. Sci. 10: 34-40. 1920. 
Discussion of application of law to fly control. 
Hopkins, I. (576) 
WHITE FLINT WHEAT. Amer. Farmer 7: 155. 1825. 
A report on the qualities of the white flint, and closing with an advertise- 
ment for sale of seed wheat. 
Hop.ey, S. (577) 
HESSIAN FLY. Ohio Bd. Agr. Ann. Rpt. (1861) 16: 103. 1862. 
Injury by fly in Crawford County, Ohio, in 1861. 
Houser, J. 8. (578) 
THE WHEAT JOINTWORM. Ohio Agr. Expt. Sta. Bull. 226: 175. 1911. 
Injury by fly and by wheat jointworm compared. 
(579) 
HESSIAN FLY IN 1927. Ohio Agr. Expt. Sta. Bimo. Bull. 12 (5) (whole no. 
128): 1389-142, illus. 1927. 
Summary of infestation survey in 38 Ohio counties, with brief discussion 
of multiplication of parasites and of weather conditions. 
(580) 
WHEAT FIELD SURVEY. Ohio Agr. Expt. Bimo. Bull. 152: 163-167, illus. 
1931. 
(581) 
THE WHEAT FIELD INSECT SURVEY, 1933. Ohio Agr. Expt. Sta. Bimo. Bull. 
18 (164): 119-122. 1933. 
See also Gossarp, H. A. 
Howapgp, C. W. (582) 
THREE IMPORTANTINSECT PESTS. Jour. Econ. Ent.9: 236. 1916. 
Note on outbreak of fly near Minneapolis, Minn. 
Howarp, L. O. (583) 
NOTICE OF AN OMISSION FROM LECONTE’S EDITION OF THOMAS SAY’S WRITINGS. 
Psyche 4: 206. 1884. 
Quotes note omitted from LeConte’s edition; disagrees with theory of 
Say on shedding of wings by Ceraphron destructor. 
(584) 
THE CHINCH BUG. U.S.Dept.Agr., Div. Ent. Bull. 17: 6. 1888. 
Confusion of hessian fly with chinch bug in North Carolina. 
(585) 
INSECT FOES OF AMERICAN CEREAL GRAINS, WITH MEASURES FOR THEIR PRE- 
VENTION OR DESTRUCTION. [Abstract] Canad. Ent. 25: 268. 1898. 
Brief résumé. 
58 
THE IMPORTED PARASITE OF THE HESSIAN FLY. Insect Life 7: 356-357. 
1895. 
Figure ot Semiotellus nigripes and review of attempt to introduce it; 
figure said by Enock to be incorrect. 
