1922 ENTOMOLOGICAL SOCIETY. 55 



1919: There were only pathological papers from Ottawa. 

 1920: The Entomological Branch in Canada, by A. Gibson. 



The European Corn Borer in Ontario, by L. S. McLaine. 



Spraying vs Dusting, by C. E. Petch. 



Quite a few distinguished entomologists have come from time to time from 

 the United States as speakers at our Society, and we note among others, Professor 

 C. R. 'Crosby of Cornell who gave us in 1914 a synopsis of his work in the control 

 of insects during that season, both in dusting and spraying. In 1918, Dr. W. H. 

 Rankin from Cornell, also gave us a paper on efficiency factors in potato spray- 

 ing. 



Until 1913, Quebec had no Provincial Entomologist. Canon V. A. Huard, 

 well known as the Editor of Le Naturalist e Canadien was made the first Provin- 

 cial Entomologist, and held this position until 1916, when he resigned and Mr. 

 George Maheux, the present titular, was appointed to the office. The Provincial 

 Entomologist does not have the means of doing any actual field work, hut co- 

 operates with the Federal Department in their work at Hemmingford, P.Q. 



Besides our Society for the Protection of Plants, the horticulturists and pom- 

 ologists of the Province, members of the Pomological 'Society have always shown 

 very keen interest in spraying problems of all sorts. As particularly interested 

 in fruit-growing in our Province you will forgive me for insisting a little on 

 this phase of economic entomology in Quebec during the past decade. 



The most important work, during the first part of the last decade was ac- 

 complished through experimental work of a high practical value in the five demon- 

 stration orchards of the Province of Quebec. The original committee of these 

 demonstration orchards comprised Prof. Blair, Mr. Peter Reid, Mr. Robert Brodie 

 and the writer. Practical demonstrations were begun in 1911 and continued for 

 five years, to determine the value of paris green and arsenate of lead as in- 

 secticides and lime sulphur and bordeaux mixture as fungicides. The different 

 mixtures were put on in all the possible combinations in the same orchard, on 

 practically the same dates with very different results. The conclusion was. that 

 arsenate of lead was a much superior insecticide for biting insects, and lime 

 sulphur wash did not burn the foliage of the apple trees nor deteriorate the fruit 

 when applied in the quantity and density then recommended by the committee. 

 Anybody visiting the demonstration orchards came back with the firm resolu- 

 tion of substituting lime sulphur wash for bordeaux. After the departure of 

 Prof. Blair for Kentville, Prof. Bunting took over the continuance of his work on 

 the committee of demonstration orchards. 



The good results obtained in the orchards did much to expand the spraying 

 in the province of Quebec and soon the large growers were possessors of gasoline 

 spraying rigs of all description when they were the exception before. 



Soon we found out that a good substitute for arsenate of lead was arsenate of 

 calcium and the writer did not take much time to adopt this new insecticide 

 generally in his orchards. Arsenate of calcium was eventually found to be a safer 

 combination with lime sulphur wash than the arsenate of lead mixed with the- 

 same fungicide. 



In a paper read before the Pomological and Fruit-growing Society of the 

 Province of Quebec, the writer took up the importance of dusting for the control 

 of the Codling Moth, one of the most destructive pests around our district, and 

 at the same time enumerated the advantages dusting seemed to have. My 

 resolution was suddenly taken to get a large, powerful duster, and after the fire 

 that consumed our monastery and my spraying gasoline outfit, which was winter- 



