24 PROTECTIOX OF PLANTS — 1923-24 



191. — To^Tisend, Charles Orrin. — Immune varieties of sugar cane. Sci. n.s. 49: 470-472. My. 16, 



1919. 

 192. — Tisdale, W. B. — Progress report on Phytophora resistant tobacco. (Abstract) Phytopa- 

 thology 14: 51. Ja. 1924. 

 193. — Thomas, H. E.^ — -The relation of the host and other factors to the infection of Apium graveo- 



lens on Septoria ap!i. Bui. Torrey Bot. Club. 48: 1-29, 1921. 

 194. — Tisdale, W. H., Dungan, G. H. and Leighty C. F. — I lag Smut of Wheat with special 



reference to varietal resistance. Illinois Agric. Expt. Sta. Bui. 242, Ap. 1923. 

 195. — Taylor, G. M. — ^Di-sease resisting potatoes. Gard. Chron. 181. ]Mar. 25, 1911. 

 196. — VaUeau, W. D. — •^'arietal resistance of plums to brown rot. Jour. Agr. Res. 5; No. 9: 



365-395. X. 29, 1915. 

 197. — Yavilor, X. I. — -Breeding for resistance to rust and mildew in wheat. Jour. Genetics 4: 



49-65, 1914. 

 198. — Van Fleet, Walter. — Hj'lirids and other chestnuts for blight destruction. Rept. Proc. 



Ann. Meeting Xorth Mut Grow Assoc. 7: 54-57. 1917. 

 199. — Van Deman, Henrv Elias. — Immunitv in Horticulture. Rural Xew Yorker, 73; Xo. 4245: 



367, Mr."7 1914. No. 4246: 401, Mr. 14, 1914. 

 200. — Viala, P., and Pacottet, P.- — ^".Sur la calture du black rot." Comptes rendus, 138, 1904. 



p. 306. 

 201. — Ward, H. M.- — ^Recent researches on the parsitism of rungi. Ann. Bot. 19, 1905. 

 202. — Walker, J. C. — Disease resistaace to onion smudge. 24; no. 12, Jour. Agr. Res. Je. 1923. 

 203. — Weiss, Freeman, Orton C. R. and Hartman R. E. — Investigations on potato wart. U.S. 



Dept. of Agric. Bui. 11.56. 1923. 

 204. — Weiss, Freeman and Orton C.R. — -Progress notes on potato wart disease investigations. 



Phytopathology 22, Ja. 1922. 

 205. — Walker, J. G. — Xotes on the resistance of onions to anthracnose. (Abstract) Phytopatho- 

 logy 8: 70. F. 1918. 

 206. — Woodworth, C. M. and Brown, iloerence Coerper. — -Studies of varieties resistant and 



susceptible to bacterial blight of the soy bean. Phytopathologj' 10: 68. Ja. 1920. 

 207. — Whisker; A. L. — Blight resistant roots, the first step towards pear bhght control. Mo. 



■ Bui. .State Com. Hort (California) 5: 48-53. F. 1916. 

 208. — Williams, J. J. and Sanderstrom, W. M. — -Biochemistry of plant diseases — 'Effect of Sclero- 



tinia cinera on plums. Bot. Gaz. 73: 287-307. 1922. 

 209. — Williams, J. J. and Davidson F. R. — Biochemistry of plant diseases — 'proximate analyses 



of plums rotted by Sclerotinia cinerea Bot. Gaz. 74: 409, 1922. 

 210. — Waldon L. R. and Clark J. A. — ^Kota, a rust resistant variety of common spring wheat. 



Journ. Amer. Soc. of Agron. 2:187-195. 1919. 

 211.— Webb, R. W. and Leighty C. E., Dungan G. H. and Kendrick, J. B.— Varietal resistance 



in winter wheat to the rosette disease. Jour. Agr. Res. Vol. 26; 6 Xov. 1923. 

 212. — Ward, H. Marshall. — ^Relation between host and parasite in the brooms and brown rust. 



Ann. Bot. 16: 23-3-315. 1902. 

 213. — Williams, J. J. and Pervier, X. C.^ — ^Biochemistry of plant diseases — phj'^sical and chemical 



basis of resistance to brown rot in plums. Sci. LIX.; No. 1514: 21. Ja. 4, 1924. 



THE DEVELOPMENT OF APPLIED ENTOMOLOGY IN CANADA 



1914-1923 



By Arthur Gibson, Dominion Entomologist, Ottawa. 



In the period covered b}^ this review much progress has been made in 

 appHed entomologj' in Canada, both in the federal and provincial services (l). In 

 discussing the development of this branch of science, I shall first of all refer 

 to the federal organization at Ottawa and then discuss important progress 



(1) In the 45th Annual Report of the Entomological Society of Ontario, for 1914, the late Dr. Hewitt contributed 

 an article entitled "Applied Entomology in Canada; Its Rise and Progress". This paper discussed the subject up to 

 about the year 1914. 



