32 PROTECTION OF PLANTS — 1923-24] 



Imperial Bureau of Entomology. 



The federal Entomological Branch assists, by contribution, in the upkeep 

 of the Imperial Bureau of Entomology, and the Dominion Entomologist is a 

 member ex-officio of the Management Committee. This Bureau established 

 in 1913, is directed b}^ Dr. Guy A. K. Marshall, assisted b}' Dr. S. A. Neave. 

 It is maintained by contributions from the Imperial Government and the 

 various Governments of the Empire. It is splendidly organized, is in touch 

 with the chief entomologists throughout the Empire, assists in identification 

 of doubtful material, and above all publishes The Review of Applied Entomology 

 and The Bulletiti of Entoviological Research, of which the former especially, is 

 of undoubted value to entomologists the world over. 



The Imperial Bureau of Entomology has also been of assistance to Cana- 

 dian entomologists in the granting of studentships for post graduate work. 

 Messrs. J. D. Tothill and A. B. Baird of the federal service were assisted in 

 this way. Dr. W. H. Brittain, Provincial Entomologist for Nova Scotia, 

 was also granted a studentship. 



The Honorary Advisory Council for Scientific and Industrial Research. 



This Council has rendered immediate assistance in furthering entomo- 

 logical research; in 1919, it granted a studentship to ISlr. Eric Hearle to permit 

 him to undertake mosquito investigations in the I^ower Eraser Valle}^ B. C, 

 under the direction of the Dominion Entomologist. In 1921, Mr. Alan G. 

 Dustan, of the Entomological Branch, was awarded a studentship to enable 

 him to take up post graduate work on insect diseases, but owing to ill health 

 he could not take advantage of this. 



Progress in the Provinces. 



NOVA SCOTIA 

 Federal: 



The officers at the Annapolis Royal laboratory have been, during recent 

 years, specially' engaged in the development of improved and cheaper insecticides. 

 Mr. Geo. E. Sanders had charge of this work until March, 1922, when he resign- 

 de to enter commercial work, since which date Mr. Arthur Kelsall has been in 

 immediate charge. The success which has attended the work of these insecti- 

 cide entomologists has indeed been remarkable. As stated in my report as 

 Dominion Entomologist for the two years ending March, 1921, these researches 

 have been of a comprehensive nature involving chemical studies of the insecti- 

 cides under consideration, insectary studies on the effect of insect poisons, etc. 

 As a result spray and dust calendars have been devised. 



One of the important results of this work was the development and 

 advancement of the dust method of pest control. The dust invented by Mr. 



