DISEASES OF PLANTS. 251 



Experiments on the treatment of the potato rot, P. Boudrin 

 {Zap. Novo-Alexandri Inst. Selslc. Khoz. Lyesov. [Mem. Inst. Agron. etFor. 

 Koico- Alexandria}, 9 (1895), pp. 46-61). — Experiments in the treatment of 

 potato rot (Phytophtora infestans) with Bordeaux mixture are reported. 

 The results indicate tliat the time of spraying should vary with the 

 character of the season and the development of the potatoes. In wet 

 years it should commence somewhat earlier than in dry years. The 

 mixture should be applied before the leaves are visibly affected, since 

 the treatment of the badly affected potatoes is likely to be injurious 

 rather than beneficial. The spraying is the more beneficial the richer 

 the soil, hence it is especially necessary where the fields are copiously 

 manured. — r. fireman. 



Anthracnose of the bean, P. H. Rolfs (Florida Sta. Bpt. 1896, pp. 48-49, figs. 2). — 

 Brief notes are given of this disease of beans, caused by CMetotrichum lagenarium 

 and suggestions given for its prevention, through spraying of plants with Bordeaux 

 mixture or some other fungicide. In ease the Bordeaux mixture is used it should 

 not be applied after the pods are well formed, but some such fungicide as eau celeste 

 should be used. 



Aphides and thrips as the cause of Bacteriosis of carnations, B. T. Galloway 

 (Florists' Exchange, 9 (1897), No. 33, p. 732). 



A diseased appearance of cacti, P. Sorauer (Monatsch . Kalcteenkunde, 7 (1S97), 

 No. 1; abs. in Bot. Centr. Bl.,70 (1897), No. 6-7, p. 228).— Notes are given of a peculiar 

 swollen appearance of certain cacti. The condition is thought to be the result of 

 local disturbance of the circulation of water in the plants. 



Celery blight, P. H. Rolfs (Florida Sta. 1,'pt. 1896, pp. 35-37). — A description is 

 given of the celery blight caused by Cercospora apii and the various conditions 

 affecting the disease. 



The downy mildew of the cucumber and its treatment, F. H. Hall (New York 

 State Sta. Bui. 119, popular ed., pp. 6, pis. 2). — A popular summary of Bulletin 119 of 

 the station. 



Notes on some experiments on finger-and-toe (clubroot), M. C. Potter (Jour. 

 Newcastle Farmers' Club, 1896, pp. 5). 



Diseases and enemies of the grapevine in Algeria, E. Eich (Supports Prclimi- 

 naires 3e Congres Internat. d'Agr., Bruxelles, 1S95, pp. 832-837). 



Notes on a disease of orchids, L. Mangin (Rev. Hort., 69 (1897), No. 15, pp. 

 346-349, figs. 6). 



Root galls of cultivated plants, B. D. Halsted (Florists' Exchange, 9 (1897), 

 No. 34, pp. 754, 755; Amer. Florist, 13 (1897), No. 481, pp. 74, 75; New England Flor- 

 ist, 3, No. 26, pp. 291, 292). — Paper read at the meeting of the Society of American 

 Florists. 



On the presence of Pseudocommis vitis in the stem and leaves of Elodea 

 canadensis, E. Rose (Compt. Bend. Acad. Sci. Paris, 125 (1897), No 6, pp. 362,363).— 

 This myxomycete is shown to attack submerged plants as well as trees, etc. The 

 Plasmodia penetrate the epidermis of the plant and form longitudinal and transverse 

 lines. 



On the propagation of Pseudocommis vitis Debray, E. Roze (Compt. Bend. 

 Acad. Sci. Paris, 124 (1897), No. 25, pp. 1470-1472). 



Diseases of plants, N. A. Cobb (Agr. Gaz. New South Wales, 8 (1897), No. 4, pp. 

 208-253, figs. 60). 



Letters on the diseases of plants, N. A. Cobb ( Agr. Gaz. New South Wales, S (1897), 

 No. 4, pp. 20S-239, figs. 62). — Popular summary of the diseases of field, garden, and 

 orchard plants. 



