REPORT OF THE SOCIETY 145 



Tachyti'echus 130 Toxomerus 135 



Taeniaptera 154 Trichocera 112 



Tanyptera 114 Tricyphona 113 



Tanypus 117 Tropidia 136 



Tanytarsus 117 Trupheoneura 132 



Temuostoraa 138 Trypeta 153 



Tephritis 154 



Tephrochlamys 149 Volucella 136 



Tephronota 152 



Tetanocera 151 Winthemia 143 



Teuchocnemis 137 



Thelaira 144 Xylophagus 124 



Themira 155 Xylota 137 



Thereva 126 



Tipula 114 Zodion 138 



ABSTRACTS OF CANADIAN PLANT PATHOLOGICAL LITERATURE. 



A. W. McCALLUM, Botanical Division, 

 Central Experimental Farms, Ottawa. 



Anonymous. Plant Diseases. 47th Ann. Rept. Ont. Agric. Coll and Exp. Farm for 1921 : 

 34-39. 1922. — Mention is made of late blight of celery, streak of tomatoes, and the dry formal 

 dehyde treatment for oat smut. 



Anonymous. Plant Diseases. 48th Ann. Rept. Agric. Coll. and Exp. Farm for 1922: 

 37-42. 1923. — Notes on pink rot of onioas, white rot of grapes, and root rot of field peas. 



Bisby, G. R., J. F. Higham, and H. Grob, Potato Seed Treatment Tests in Manitoba. 

 Sci. Agric. 3: 219-221. 1923. — Experiments carried on during a period of three years indicate 

 that at Winnipeg seed treatment with formaldehyde or corrosive sublimate for the control of rhi- 

 zoctonia is not effective although it reduces the amount of scab. Copper sulphate was not found 

 to be safe or reliable for seed treatment. 



Ceasar, L. Some notes on Sprav Matters. 15th Ann. Rept.Que. Soc. Prot. Plants for 1922- 

 1923: 28-34. 1923. 



Caron, Omer. The Seed Plot as a Measure of Protection. 15th Ann. Rept. Que. Soc. 

 Prot. Plants for 1922-1923: 45-47. 1923. 



Cook, M. T. Past and Future of Plant Pathology. 15th Ann. Rept. Que. Soc. Prot. Plants 

 for 1922-1923: 14-28. 1923.— An address given before the Quebec Society in which the history of 

 plant pathology up to the present is drscussed and the probable lines of development in the future 

 are indirated. 



Coulson, J. G. Peony Diseases, loth Ann. Rept. Que. Soc. Prot. Plants for 1922-1923: 

 67-70. PI. 2-3. 1923. — Seven diseases of the peony are enlimerated, the most important 

 of which is the Sepioria leaf spot. 



Dickson, B. T. A study in Disease Susceptibility. Sci. Agric. 3: 307. 1923. 



Dickson, B.T. Raspberry Mosaic and Curl. Sci. Agric. 3:308-310. 1923.— The symptoms 

 and method of dissemination "of these important diseases of raspberry are described; methods 

 of control are outlined for each. 



Dickson, B. T. A Study in Disease Susceptibility. 15th Ann. Rept. Que. Soc. Prot. Plants 

 for 1922-1923: 60. PI. 1. 1923. 



Dickson, B. T. Plant Diseastes of 1922 in Western Quebec. 15th Ann. Rept. Que. Soc. 

 Prot. Plants for 1922-1923: 43-45. 1923. 



Dickson, B. T., R. Summerbv, and J. G. Coulson. Experiments in the Control of Oat Smut. 

 15th Ann. Rept. Que. Soc. Prot. Plants for 1922-1923: 102-105. 1923.— Germination of hull-less 

 oats was much reduced by the formaldehyde treatment. Both copper sulphate-lime dust and 

 copper carbonate dust were found to be as effective as the formalde hyde spray in controlling smut. 



Drayton, F. L. Survey of the Prevalence of Plant Diseases in the Dominion of Canada, 

 1922. Canada, Dept. Agric. Exp. Farms Branch: 3rd Ann. Rept. 1-192. 1923. 



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