960 EXPERIMENT STATION RECORD. 



while spraying on April 28, May 5, 12, and 17 were of no more effect 

 than a single one in preventing attacks of the fungus. 



For the later attacks of the disease the author states that a single 

 spraying is sufficient. For the maximum results the application should 

 be made from 2 to 5 days after the most acute period of invasion by 

 the fungus or 5 to 8 days after the appearance of the first spots on the 

 leaves. 



As an explanation the author states that at about the dates indicated 

 the young organs of the plant are in a most receptive condition and 

 the spores are at that time being widely disseminated so that ihe 

 copper solution finds the best conditions for its efficiency. 



Studies on root rot and other injuries to ligneous plants, F. Cavaka (Stag. 

 Sper. Agr. Ital., 29 (1896), pp. 7SS-814; abs. in Ztschr. Pflanzenkrank., 7 (1S97), No. 6, 

 pp. 360,361). — Notes are given of the injury to trees through attacks of Calocera 

 viscosa, Tremellodon gelatinosum, Polyporus versicolor, P. sulphureus, P. cwsius, P. 

 abietinu8, Tricholoma saponaceum, Mycena epipterygia, Pleurotus nidulans, Hygrophorue 

 pudorinus, Flammula penetrans, F. spumosa, Pholiota aurivella, and Lycoperdon gem- 

 mat um. 



Culture experiments with hetercecious rust fungi, H. Kijsuahn (Ztschr. Pflan- 

 zenkrank., 7 (1S97), No. 6, pp. 325-345, figs. 4). — Studies are given of Melampsora spp., 

 Peridermium strobi, and P. pini. 



The hexenbesens of cherry trees and their prevention, K. von Tubeuk (Prat. 

 Bl. Pflanzenschutz, 1 (1S9S), No. 1, jy;. 4-6, figs. 2). 



Two destructive celery blights, B. M. Duggar (New York Cornell Sta. lipt. 1897, 

 pp. 201-220, figs. 13). — A reprint from Bulletin 132 of the station (E. S. R., 9, p. 358). 



A disease of currant canes, E. J. Dueand (New York Cornell Sta. Bpt. 1897, pp. 

 22-38, figs. 13).— A reprint of Bulletin 125 of the station (E. S. R., 9, p. 359). 



A disease of chestnut trees, E. Rozrc (Compt. Rend. Acad. Set. Paris, 125 (1897), 

 No. 23, pp. 982, 983). — The chestnut is said to be exceptionally subject to attacks of 

 Pseudocommis vitis, the cysts or plasmodia of which readily gain entrance through 

 the leaves and young branches. The fruit through its spiny envelope also offers a 

 good medium for attacks of the organism and the attack on the fruit is often associ- 

 ated with Aspergillus glaucus. 



A new disease of firs, F. Cavaka (Ztschr. Pflanzenkrank., 7 (1897), No. 6, pp. 321- 

 325, pi. 1). — Notes are given of attacks of Cueurbitaria pithyophila cembrce on Abies 

 pectinata. From the nature of the disease the affected portions should be cut away 

 and burned. 



On the development of the ■white rot of grapes (Charrinia diplodiella), P. 

 Viala ( Ann. Ecole Nat. Agr. Montpellier, 9 (lS95-'96), pp. 266-268). 



The lily disease, B. D. Halstkd (.liner. Florist, 13 (1898), No. 510, p. SS2, fig. 1).— 

 Briefly describes the Bermuda lily disease, quoting from U. S. Dept. Agr., Division of 

 Vegetable Physiology and Pathology Bulletin 14 (E. S. R., 9, p. 658). 



Diseases of the potato, E. G. Lodkman ( Neiv York Cornell Sta. Rpt. 1896, pp. $95- 

 331, pi. l,figs. 2).—k reprint of Bulletin 113 of the station (E. S. R., 8, p. 137). 



Rust experiments, F. Maddox (Agr. Expis. Eastfield, Tasmania, 1897, pp. 85-90). — 

 The author gives a review of experiments conducted with different rusts in which 

 various facts relative to the life history of the fungus were investigated, and he 

 concludes that their life history is by no means understood. 



Latest experiences concerning rust on small grains, E. Rostrup ( Ugeskr. 

 Landm., 43 (1897), No. 48, pp. 687-639). 



What is grain rust and how can it be checked ? J. Eriksson (Hvad ar Sddesrost 

 och hvad kan goras mot de-mamma? Stockholm: P. A. Norstedt fy Siiner, 1S96, pp. 82). 



