REPORT OF THE SOCIETY 147 



feet control though further work may yield better results. Where seed treatment is not af 

 present practised and whore absolute control is not a necessity this form of treatment might 

 l)c used with advantage. 



Lochhead, W. The Protection of Plants. 15th Ann. Rept. Que. Soc. Prot. Plants for 1922- 

 1023: 11-14. 1923.- — The presidential address deH\ered before the fifteenth annual meeting. 



Major, T. G. Cultural Characteristics of Certain Species of Fusarium. 15th Ann. Rept- 

 Que. Soc. Prot. Plants for 1922-1923: 79-87. 1923. — Several species of Fiisariinn were studied 

 in pure culture to determine the eff'ects of temperature, H-ion concentration, and various media 

 upoh the growth characteristics. Wide variations in cultural features were obtained upon diffe- 

 rent media; the effects of temperature and H-ion concentration were not so pronoudiced. 



McCallum, A. W" Abstracts of Canadian Plant Pathological Literature. 15th Ann. 

 Rept. Que. Soc. Prot. Plants for 1922-1923: 127-129. 1923. 



Rankin, W. H. and W. P. Fraser. Survey of the Prevalence of Common Plant Diseases 

 in the Dominion of Canada, 1920. Canada, Dept. Agric. Exp. Farms Branch: 1st Ann. Rept. 

 1-55. 1921.- — ^This report is the result of the first organized effort made in Canada to collect and 

 publish information in regard to the occurrence and distribution of plant diseases. Reports 

 from every province are included. 



Rankin. W. H. and W. P. Fraser. Survey of the Prevalence of Common Plant Diseases in 

 the Dominion of Canada, 1921. Canada, Dept. Agric. Exp. Farms Branch: 2nd An,ti. Rept. 

 1-62. 1922. 



Richardson, J. K. A Study of Soft Rot of Iris. 15th Ann. Rept. Que. Soc. Prot. Plants 

 for 1922-1923: 105-120. PI. h-7. 1923.— Rhizome rot is becoming an important disease of 

 Iris. Two organisms which on inoculation produced typical rot were isolated from diseased plants ; 

 these are believed to be forms or Bacillus cnrotnvorus. 



