450 EXPERIMENT STATION RECORD. 



Experiments for preventing potato scab, Teiciiert (Ztschr. Spiritusind., 1898, 

 No. IS, p. 119). 



Experiments in infecting soil with potato-scab fungus, B. D. Halsted (Amer. 

 Card., 19 {1898), No. 181, pp. 435, 4.10).— The experiments show the possibility of 

 infecting soil with i he fungus several months before planting the crop. The scabby 

 tubers were applied directly and fed to stock aud the manure applied with similar 

 results. 



Potato scab, R. Helms ( Producers' (las. and Settlers' Uec. [ West. Australia], 5 ( ISOS), 

 No. 5, pp. 3S2-3S4). — Popular notes are given on the cause of potato scab aud sug- 

 gestions for its prevention. 



One cause of the brown or black rot of cabbages, E. F. Smith (Ztschr. Pflanzen- 

 krank., 8 (1S98), No. 3, pp. 134-137, pi. 1).— The author summarizes the results of his 

 iuvestigations on the black rot of cabbages due to Pseudomonas campestris. .More 

 extended accounts of the investigations have been given in Farmers' Bulletin 68 

 (E. S. R., 9, p. 849) and in Centbl. Bakt. u. Par., 2. Abt., 3 (1897), p. 284 (E. S. R., 9, 

 p. 847). 



A bacterial disease of mulberries, D. McAlpine (Ztschr. Pflanzenkrank., S (1S9S), 

 No. 3, pp. 142, 143). — The author briefly describes a bacterial disease of mulberry 

 twigs which has appeared in various parts of Victoria, Australia, and states that 

 the specific organism is probably that described by Boyer aud Lambert as Bacterium 

 mori. , 



Club root of cabbage, P. Hennings (Ztschr. Pflanzenkrank., S (1898), No. 2, 

 p. 124). — In a brief note the author states that the characteristic formations caused 

 by Plasmodiophora brasaicce have been found on the Nasturtium paliistre and Raphanus 

 raphanistrum. 



Sorghum blight and the bacteria which cause it, F. F. Bruyning (Arch. Neer- 

 land. Sci. Exact, et Nat., 1S98, No. 4-5). 



Relation of temperature and growth of vine to black rot, G. Cazeaux-Cazalet 

 (L'er. Vit.,1898, No. 217, pp. 173-170; 218, pp. 201-208; 219, pp. 229-233). 



Root rot of coffee, F. Noack (Ztschr. Pflanzenkrank., S (1S9S), No. 3, pp. 137-142). — 

 The author describes a root rot of coffee, which is said to be due to nematodes. They 

 appear to attack most severely the taproot, and the plant dies within a few years, 

 dependent upon the vigor of the tree. The author states that by early and repeated 

 local applications of carbon bisulphid the injury may be reduced to a minimum. 



The violet disease, B. D. Halsted (Amer. Florist, 14 (189S), No. 541, p. 310).— 

 Notes are given on Cercospora violw and Pliyllosticta violce, with suggestions for pre- 

 venting their attacks. 



Leaf spot and fruit rot of tomatoes, B. D. Halsted (Amer. Card., 19 (1S98), 

 No. 183, p. 4GS, figs. 2). — Notes are given of these diseases aud methods followed for 

 their prevention. 



Pliyllosticta hortorum on eggplants, B. D. Halsted (Amer. Gard., 19 (1S9S), 

 No. 187, p. 531, fig. 1). 



A palm-leaf blight, B. D. Halsted (Amer. Florist, 13 (1898), No. 526, p. 1426, 

 figs. 2). — Illustrated notes are given of a blight of Liristonia rotundifolia due to Col- 

 letotrichum sp. 



Exobasidium vitis, A.. Potebnia (Arh. Naturforsch.-Gesell. Charkoiv, 31 (1897), 

 pp. 25-27, pi. 1; abs. in Dot. Centbl., 75 (1S9S), No. 4-5, pp. 12.', 123). 



Concerning the destruction of barley by a new fungus parasite (Separate from 

 Wchnschr. Brau., 15 ( IS97), No. 42, pp. 2). 



The Bermuda lily disease, G. A. Bishop (Florists' Exchange, 10 (1898), No. 35, 

 pp. 832,833). — A summary is given of the report of the author concerning this dis- 

 ease. It is said to be due to the following causes: Heavy manuring with barnyard 

 manure; repetition of crop on the same ground; reduced vitality; bad selection of 

 stock, and insufficiency of plant food. All these render the plant subject to fungus 

 attacks. Directions for soils aud manures are given, and where the plants are 

 attacked by fungi and insects, spraying is recommended, formulas being given. 



