REPORT OF THE SOCIETY 49 



investigated a rather serious outbreak of one of the tent caterpillars, 

 (Malacosoma sp.) particularly on the Moose IMountain Reserve, where 

 aspen poplars, especially, were defoliated. In the same year, Mr. J. J. de 

 Gryse was appointed to take charge of shade tree insect investigations in the 

 Praine Provinces and with the interest and co-operation of j\Ir. Norman 

 M. Ross, Chief of Tree-planting Division, Dominion Forestry Branch, a tem- 

 porary laboratory was established on the Forestry Station at Indian Head. 

 Mr. de Gryse, visited also, later in the year, the Moose Mountain area infested 

 by tent caterpillars. An excellent start has been made in shade tree insect 

 investigations and Mr. de Gryse has already accumulated much data of value. 

 With the coming into effect of the revised regulations of the Destructive 

 Insect and Pest Act, Sept. 1, 1923, the fumigation station at North Portal was 

 closed. 



Provincial 



During the last decade, Mr. 'SI. P. Tullis, Field CrDps Commissioner, has 

 aided very materialh' in entomological control work in the province and he has 

 been chiefly responsible for the recent very successful grasshopper campaign 

 The following quotation is from his report for 1923. "In 1919, forty-six rural 

 municipalities were infested. Unfortunately, 90,000 acres of crop were 

 destroyed, but as a direct result of the campaign 120,000 acres were saved. 

 In 1920, the outbreak was more serious, and ninety-seven rural municipalities 

 were involved. However, the campaign was nore highly organized and 

 1,400,000 acres of infested crop were saved, while only 45,000 acres were 

 destroyed. In 1921, the same methods of organization were employed, and 

 ninety-five rural municipalities fought the grasshoppers. 1,960,000 acres of 

 infested crop were saved and 93.000 acres destroyed. In 1922, one hundred 

 and thirty-seven rural municipalities were affected; 640,000 acres were saved 

 and 23,000 acres destroyed. 



Reviewing the situation daring the last four years it is found that grass- 

 hoppers have cost the sum of $74:2, 535. 35 in supplies alone, assuming that in 

 1919 the municipalities paid out a sum equal to that spent by this Branch. 

 The total number of acres of infested crop saved in the four campaigns is 

 3,256,000, and the acreage destroyed is 251,^000." 



University of Saskatchewan 



With the appointment of Dr. A. E. Cameron, of the Dominion Entomolo- 

 gical Branch, as Professor of Zoology and Entomology in 1920, the Univer- 

 sity took a more active interest in entomological research and education. In 

 the University courses of instruction. Dr. Cameron has given the entomological 

 lectures and directed the laboratory work. He has also continued his research 

 work particularly in the dipterous family Simuliidae. In 1923, Dr. Seymour 

 Hadwen, lately of the federal service, Ottawa, was appointed Research Profes- 

 sor of Animal Pathology. Dr. Hadwen is continuing entomological work, his 

 interest being largely in insects affecting live stock before taking up his 

 duties at Saskatoon, he prepared a bulletin concerning which, which was 

 published by the Dominion Entomological Branch. 



