ditions where the same factors, it may be, are operating but under relatively dif- 

 ferent intensities, the result is different. 



While progress in the control of insects by natural means may appear very 

 slow, and the results meagre, considering all the efforts that have been made, 

 yet when we look back over the last forty years and scan the records of achieve- 

 ment, whether they be successes oar failures, one fact looms up distinctly, that 

 much advance has been made towards a better understanding of the operation 

 and the inter-relations of the factors. With this valuable knowledge we may 

 confidently press forward to other achievements which will eventually give us 

 the clue to the control of injurious insects by natural means. 



REPORT OF THE DELEGATE TO THE ENTOMOLOGICAL SOCIETY 



OF ONTARIO 



By Firmm Leloumeau, Oka. 



The "Quebec Society for the Protection of Plants" had delegated me and I 

 had the honor to take part in the deliberations of the Fifty-Sixth Annual Meeting 

 of the "Entomological Society" of Ontario, held at Ottawa, Thursday and Friday, 

 November 6th and 7th, 1919. 



The assembly was large and most of the Canadian entomologists, as w^ell as 

 several from the United States, formed the deliberative part of it. 



The Addresses given were generally short, but of the greatest importance, 

 as usual. 



At the first sitting, the President of the Society, Mr. L. Caesar, professor, 

 Ontario Agricultural College, Guelph, and Mr. W. A. Ross, Dominion Entomolo- 

 gical Laboratory, Vineland Station, Ontario, spoke of the most pernicious insects 

 of last year: to wit: the Codlin Moth, the Cigar-case bearer, the Blister Mite, the 

 San-Jose-scale, the Pear-slug, the Tussock-Moth, the Plum-weevil and the Potato- 

 leaf-hopper. The particulars given in connection with each of them were most 

 interesting. 



Mr. R. C. Treherne made a short report of his work at the Dominion Ento- 

 mological Laboratory, Vernon, B. C, and Mr. G. C. Spencer, Guelph, a soldier 

 of the Great War, closed the first session by giving the meeting an idea of the 

 experimental work he was conducting with Chloropicrin for the control of 

 insects injurious to grain. 



Dr. C. G. H-ewitt, the great entomologist whose voice is now silent for ever 

 and who is regretted by the whole scientifical world, gave the last address of the 

 second session of the 6th. He spoke of the new insect Bphydra hians, which had 

 made its first appearance in the Canadian West. 



