REPORT OF THE SOCIETY 77 



Gussow, H. T., Rept. of Division of Botany, Central Expt. Farm Rept. 1916: 1097-1127, 

 (7 pi.). White pine blister rust; the present Canadian situation is outlined and an account given 

 of the work of the year on this disease. Powdery scab of potatoes; experiments are recorded 

 showing that corrosive sublimate is the best seed disinfectant, with formalin second; keeping the 

 seed in a warm room just before planting doubled the amount of scab. Notes on the improvement 

 of the potato crop, recommending field and crop inspection; potato spraying experiments. Three 

 grain troubles are noted, "sooty ear" of wheat, referred to Cladosporium, glume spot of wheat due 

 to Sepforia Glumarum Pass, and wheat scab. A note on bitter pit or fruit pit of apples summa- 

 rizes McAlpine's investigations. 



Harcourt, R. and Fulmer, H. L., lyisecticides and Fungicides. Ont. Agr. College Bui. 154: 

 1-32, 1907. Description of preparation and chemical composition of the common insecticides and 

 fungicides. R. E. Stone. 



Harcourt, R. and Fulmer, H. L., Insecticides and Fungicides. Ont. Agr. College Bui. 195, 

 1912. Study of chemical composition and, preparation of common insecticides and fungicides. 

 R. E. Stone. 



Harrison, F.C. and Barlow, B., Some Bacterial Diseases of Plants prevalent in Ontario. Ont. 

 Agr. College Bui. 136: 1-33 (12 figs.), 190-i. Discusses fire blight or twig blight, bacteriosis of 

 beans, soft rot of cauliflowers, fall turnip, etc.j soft rot of swedes or yellow turnips, soft rot of 

 celery. R. E. Stone. 



Harrison, F. C, A Bacterial Disease of CatdiHou'er (Brassica oleracea), and allied plants. 

 Ont* Agr. College Bui. 187: 1-32 (12 figs.), 1904. A careful study of the causaul organism {Bacillus 

 olearaceae n. sp.), isolation, cultural characters, histology of diseased plants and chemical products 

 of the causal organism. R. E. Stone. 



Harrison, F. C. and Sadler, Wilfrid, A Bacterial Soft Rot of Turnips. Trans. Royal 

 Society of Canada (Third Series), Vol. 7, part 4: 91-106 (figs. 1-14), 1913. Pethogenicity of an 

 organism belonging to the "soft rot" type is worked out in detail. Morphological and cultural 

 features described. W'. P. Eraser. 



Harrison, F. C. and Sadler, Wilfrid, A Bacterial Soft Rot of Turnips. Quebec Soc. Prot. 

 Plants, Ann. Rept. 6: 59-72 (figs. 1-15), 1914. The pathogenicity of an organism of the "soft rot" 

 type which was the cause of a rotting disease in turnips is described in detail. Morphological and 

 cultural features of the organism are described and field notes on the disease are given. W. P. 

 Eraser. 



HowiTT, J. E., Fungus Diseases. Ont. Agr. College and Expt. Farm, Ann. Rept. 38: 29-32. 

 List of the common fungus diseases of the j'ear. Ginseng diseases with measures of control. 

 R. E. Stone. 



HowiTT, J. E., Fungus Diseases. Ont. Agr. College and Expt. Farm, Ann. Rept. 37: 47-51, 

 1911. Report on common fungus diseases with special reference to loose smut of wheat, holly- 

 hock rust, crown rust of oats, rose leaf blotch, blight of ginseng, sooty blotch of apple. R. E. Stone. 



HowiTT, J. E., Fungi and Plant Pathology. Ont. Agr. College and Expt. Farm Ann. Rept. 

 39: 35-49, 1913. List of diseases attracting most attention during the year. Plant diseases com- 

 paratively new in Ontario, club root of cabbage, powdery scab of potatoes, raspberr\' yellows and 

 cane blight. Experiments in the control of late blight of celery, with Bordeaux mixture recom- 

 mended. Notes on the apothecial stage of Sclerotinia cinerea in Ontario. R. E. Stone. 



HowiTT, J. E., Rept. of Botanist, Ont. Agr. College and Expt. Farm, Ann. Rept. 41: 17-22, 

 1915. Experiments to control late blight of celer\'. Spraying experiments to prevent rose-leaf 

 blotch. White pine blister rust {Peridermiuni stro'bi), its occurrence in Ontario. A troublesome 

 disease of winter tomatoes. R. E. Stone. 



HowiTT, J. E. and Stone, R, E., The Smuts and Rusts of Grain Crops. Ont. Agr. College Bui. 

 229: 1-24 (15 figs.), 1915. Discussion of the smuts and rusts of wheat, oats, barley and corn, 

 estimates of the annual losses due to these diseases. Description of the dift'erent smuts with life 

 history of the causal organism and methods of prevention. Formalin treatment recommended 

 where possible. Description of some grain rusts and their life histories where known, recommenda- 

 tion of destruction of barberry and buckthorn, methods of culture, varieties suitable to Ontario; 

 citation of law for the destruction of the barberry. 



HowiTT, J. E., Rept. Dept. of Botany, Ont. Agr. College and Expt. Farm, Ann. Rept. 42: 

 15-18, 1916. Fungus diseases; diseases new in Ontario; inspection for white pine blister rust. 

 R. E. Stone. 



