CONTENTS 



PAGE. 



Officers fob 1920-1921 6 



Financial Statement 6 



Annual Meeting 7 



Report of the Council 8 



Librarian 9 



" Montreal Branch 9 



Toronto Branch 10 



British Columbia Branch 10 



Nova Scotia Branch 11 



Reports on Insects of the Year: Division No. 3: A. Cosens 12 



Reports on Insects of the Year : Division No. 4 : F. J. A. Morris 13 



Notes on Deaf Bugs Attacking Fruit Trees in Ontario: D. Caesar 14 



The Manitoba Grasshopper Campaign of 1920: A. V. Mitchener 16 



Some Phases of the Present Docust Outbreak in Manitoba: N. Griddle 19 



The Influence of Docusts on the Ranges of British Columbia: E. R. Buckell . i2'3 



The Invasion of Southern Alberta by Beet Webworms: E. H. Strickland .. 29 



The Present State of the Hessian Fly in Western Ontario : H. F. Hudson . . 33 



Insects of the Season: H. F. Hudson 34 



Insects of the Season in Ontario : L. Caesar 35 



Some of the Broader Aspects of Insect Control: E. P. Felt 43 



Further Data on the Cabbage Maggot (Phorbia brassicae) : L. Caesar 50 



The Control of the Cabbage Root Maggot in British Colaianfbia: R. C. Treherne 51 



Inter-relations in Nature : W. Lochhead 53 



Conference on the European Corn Borer 60 



Notes on the Control of the Rose Midige : W. A. Ross 63 



Some Mosquito Problems of British Columbia: Eric Hearle B6 



Report on Injurious Insects in Quebec for 1920: Geo. Maheux 70 



The Entomological Record: Norman Criddle 72 



Index 91 



[5] 



