52 PROTECTION OF PLANTS — 1923-24 



University and since then he has, in addition to teaching entomolog-y, endea- 

 voured to build up a working collection of the insects of the province and 

 also a general consulting library. In his new field of labour he has already 

 made interesting progress and in economic problems of importance has conti- 

 nued to aid federal work in addition to directing provincial activities. 



The Alberta Natural History Society. 



Since 1914, this society has continued to publish in the Annual Report 

 of the Department of Agriculture a statement regarding insects of the season. 

 This report has in the main been prepared by Mr F. C. Whitehouse. In 

 addition to this annual statement the society has published the following 

 important lists: "Dragonfiies (Odonata) of Alberta, by F. C. Whitehouse, 

 issued May, 1918; "Annotated Check List of the Macrolepidoptera of Alberta", 

 by K. Bowman, issued February, 1919, and "Annotated List of Coleoptera 

 of Northern Alberta", by F. C. Carr, issued August, 1920. 



BRITISH COLUMBIA 



Federal 



In 1914, the Entomological Branch had its headquarters in the Province 

 of British Columbia, at Agassiz, with Mr. R. C. Treherne in charge. In that 

 year investigations chiefly related to root maggots, wheat midge and insects 

 affecting fruit particularly in the Lower Fraser and Okanagan Valleys. Bulletin 

 No. 8, on the Strawberry-root Weevil, by Mr. Treherne was published in 

 1914, and in the same year Bulletin No. 7 on "Forest Insect Conditions in 

 British Columbia", by Dr. Swaine, was also published. In 1914, too, a tempo- 

 rary forest insect laboratory was established in Stanley Park, Vancouver, with 

 Mr. R. N. Chrj'stal in charge. Spruce gall aphids, the Hemlock Looper, 

 (Ellopia sp.) and bark-beetles were especiall}^ investigated. In 1915, this 

 work was continued, and in the same year. Dr. Swaine visited the National 

 Parks at Glacier and Field to examine forest insect prevalence. The Stanley 

 Park laboratory was closed in 1917, when Mr. Chrystal returned to Ottawa 

 to undertake studies of scale insects in general and also certain shade tree 

 insects. 



The Cabbage Root Maggot project engaged most of Mr Treherne's time, 

 in 1915, at Agassiz, and much valuable work was accomplished. In view of 

 the discovery of the Pear Thrips Taeniothrips inconsequens Vzq\. a temporary 

 laboratory was established in 1916 at Roj^al Oak, Dr A. E. Cameron appointed 

 in that year being specially detailed to carrj- on the investigation with the 

 co-operation of Mr. Treherne. In this work our officers had the assistance 

 of Mr. E. V.White of the Provincial Horticultural Branch. The results of 

 this study which was continued in 1917, were published in Bulletin No 15. 

 In 1916, too, a study of the Codling Moth situation in the province was begun 

 by ]\Ir Treherne with the assistance of ISIr ]\I. Ruhmann of the provincial 

 service. In this year. Bulletin No. 12 on the "Cabbage Root Maggot 

 and its Control in Canada" was prepared jointly by the writer and Mr. Treherne. 

 In experiments for destroying insects affecting stored products conducted in 

 1917, the value of heat was demonstrated in the province for the first time. 

 In that year, in addition, the life-history and control of the Peach Twig Borer, 



