DISEASES OF PLANTS. 155 



must be kept iu tightly corked jugs or in closed barrels or casks. When 

 ready for use, 1£ pt. of the solution is added to 50 gal. of water and the 

 seed soaked for 24 hours. 



A bacterial rot of cabbage and allied plants, H. L. Kussell 

 ( Wisconsin Sta. Bui. 65, pp. 39, Jigs. 15). — This bulletin gives the com- 

 pleted results of the investigations of the author and his assistants, 

 1 1 . A. Harding and F. Crauefleld. A sketch of this work was presented 

 by the author in a paper read before the Association of American Agri- 

 cultural Colleges and Experiment Stations, 1897. The author's investi- 

 gations of this disease were conducted at the same time as those of 

 E. F. Smith, which have been previously noted. 1 The conclusions of the 

 two authors practically agree in the cause of the disease, biology of the 

 organism, and methods of prevention. 



Plant diseases in Holland, C. A. J. A. Oudemans (K. Akad. Wetten. Amsterdam, 

 1897, June, .'6; aba. in Ztschr. Pfianzenkrank., S (1898), No. 1, p. S3). — The author reports 

 young peas attacked by Brachyspora piai, n. sp.; leaves of rye affected by Marsonia 

 8ecalis, n. sp. ; gooseberries attacked by Hendersonia grossularice, n. sp. ; and buckwheat 

 by Fusicladium fagopyri, n. sp. In addition to these new species the following are 

 noted : Ascochyta graminicola on young rye, Botrytis cinerea on leaves and branches of 

 Prunua cerasus, Scolecotrichum melojphthorum on fruits and vines and melons, Macro- 

 sporium parasiticum on shallots, Cladochytrium graniinis on oats, and Helminthosporinm 

 gramineum Eabh., which is said to be identical with H. teres Sacc. and H. gramineum 

 Eriks., on winter rye. 



Notes on plant parasites, 6. Wagner (Ztschr. Pflanzenkrarik., S (1898), No. 1, pp. 

 7-10). — Notes are given of a number of parasitic fungi. Among them are a number 

 of Uredinea- — Cystopus candidus, Plasmopara viilcola, Brema lactuccu, etc. 



Club root of cabbage, B. D. Halsted (Amer. Gard., 19 (1S9S), No. 177, p. 373, 

 jig. 1). — A brief account is given of experiments made to determine the susceptibility 

 of cabbages to the fungus Plasmodiophora brassicce. It is shown that the first three 

 weeks of the life of the plant is the period of greatest susceptibility. On this 

 account seed beds should be looked after very carefully. Lime at the rate of 35 bu. 

 per acre will destroy the fungus in the soil. 



Finger and toe (club root) of swedes and turnips (Gard. Chron., 3. ser., 23 (1898), 

 No. 593, pp. 281, 282). — Aa a result of experiments carried on at Reading it is said 

 that quicklime, chalk, or gas lime well mixed with soil will greatly lessen attacks 

 of the disease. Basic slag will to some extent do the same. Swedes or turnips 

 should not be grown for about two years on areas that have received lime. 



Mycological notes, C. Wehmer (Ccnibl. Bakt. u. Par., 2. Abt., 4 (1898), No. 5, pp. 

 189-195, pi. 1, fig. 1). — The author describes a 2-spored form of Merulius lacrymans, 

 fermentation of kidney beans, and a Botrytis disease of the Chinese primula. 



A contribution to the biology of Exoascus deformans, von Derschai (Landw. 

 Jahrb., 26 (1897), No. 6, pp. 897-901, pi. 1). 



A remarkable gall disease of a North American species of Abies in the Ber- 

 lin Botanic Garden, P. Hennings (Verhandl. Bot. T'er. Pror. Brandenburg, vol.37, 

 p. 26; abs. in Ztschr. I'flantenkrank., 8 (1S98), No. 1, pp. 39, 40) .—Festal ozzia tumefa- 

 ciena, n. sp. from Abies nobiiis is described. 



Bean canker, G. Massee (Gard. Chron., 3. ser., 23 (1898), No. 594, p. 293, Jig. 1).— 

 A disease of French beans and scarlet runners is figured and described. The cause 

 is said to be Glaosporinm lindemuthianum . 



'Centbl. Bakt. u. Par., 2. Abt., 3 (1897), Nos. 11-12, pp. 284-291; 15-16, pp. 408-415; 

 17-18, pp. 478-486. U. S. Dept. Agr., Farmers' Bui. 68, pp. 22 (E. S. R., 9, p. 847, 849). 



