DISEASES OF PLANTS. 457 



Some fungus diseases of celery, B. I). Halsted ( Amer. Hard., 18 (1897), No. 140 

 p. 743).— Notes are given of celery blight (Cercospora apii), leaf spot (Phyllosticta 

 apii), leaf blight (Septoria petroselini), celery rust (Puccinia bullata), and a bacterial 

 disease. Most of the material was drawn from Bulletin Q of the New Jersey Sta- 

 tions (E. S. R., 3, p. 884). 



Gooseberry blight (Jour. lid. Ayr. [London], 4, No. 2, pp. 20,1-204, fig. 1). — Brief 

 notes are given on Microsphceria grossularia. Sulphur", sulphid of potassium, and 

 Bordeaux mixture are all recommended as preventive means for its control. 



Plum fruit rot, B. D. Halsted (Card, and Forest, 10 (1897), No. 506, pp. 436, 437). — 

 Notes are given on an unusually severe attack of Monilia fruetigena on plums, 

 together with suggestions for preventive treatment. 



On the cause of a leaf curl of potatoes, E. Roze (Compt. Rend. Acad. Sci. Paris. 

 125 (1897), No. 1, pp. 59-61). — A disease called frisole'e due to Psettdocomntis vitis is 

 described. It is said to resemble the ordinary potato rot due to Phytophthora 

 infestans. 



Tomato disease on forced plants, J. C. Arthur (Amer. Florist, 13 (1897), No. 

 491, pp. 282, 283). — General directions are given for the prevention of disease on 

 tomatoes grown under glass. 



The diseases of sugar cane, II, C. A. Barber (Science Progress, n. so-., l ( 1897), No. 

 4, pp. 461-482). 



A lily bulb disease, G. Massee ((lard, and Forest, 10 (1897), No. 504, pp. 414, 415). 



A snowdrop disease, <J. MaSSEE (Kern Misc. Bui. 124, p. 172). — A brief note is 

 given of a disease of snowdrops due to Sclerotinia galanthi, Bordeaux mixture is 

 said to prevent attacks of the disease. 



A canna disease (Few Misc. Bui. 124, p. 173). — A disease of cannas due to (redo 

 cannw is mentioned as occurring in Brazil and Trinidad and may possibly reach 

 Europe. 



A fungus disease of Porthesia chrysorrhcea, G. Lindat (Notizbl. k. hot. garten 

 it. Museum, Berlin, 1897, No. 9, pp. 288,289). 



Fungus diseases of the chrysanthemum, B. D. Halsted {Amer. Gard., 18 

 (1897), No. 147, pp. 709, 710, figs. 4): 



Wakker's hyacinth bacterium, E. F. Smith (Hot. (iaz., 24 (1897), No. 3, p. 188).— 

 Abstract of paper read before Section G of the American Association for the 

 Advancement of Science at the Detroit meeting, August, 1897. The specific cause of 

 the disease is said to lie Bacterium hyacynthi aud not Bacillus hyacinthi septici as 

 claimed by Heinz. 



Bacteria in their relation to gardeners, R. Aderhold ( TJeber die Bakterien in 

 ihren Beziehungen zur Gdartnerci. Breslan , 1897 ', pp . 15). 



Concerning diseases of Galanthus and Paeonia, C. A. J. A. Oudemans (Konikl. 

 Akad. Wetensch. Amsterdam, 1897, p. 455; abs. in Hedwigia, 34 (1897), No. 5, Bepert., p. 

 138). — The diseases are caused by Botrytis galanthi and B. pceonice, n. sp. 



CEdema in the roots of Salix nigra, H. von Schrenk (Bot. Gaz., 24 (1897), No. 1, 

 pp. 32-54, figs. 2). 



Rusty appearance of elm leaves, 0. S. Whitmore and B. D. Halsted (Gard. and 

 Forest., 10 (1897), No. 504, pp. 417, 418). — Notes are given of a rusty appearance of elm 

 leaves the cause of which is not known. 



Pseudocommis vitis parasitic on marine plants, E. Roze (Compt. Rend. Acad. 

 Sci. Paris, 125 (1S97), No. 9, pp. 410,411). — Notes the occurrence of this myxomycete 

 in various aquatic plants. 



On the insolubility of copper in soap mixtures, L. Degrully (Prog. Agr. et 

 Vit., 28 (1897), No. 30, pp. 90, 91). 



Experiments in the treatment of apple scab, F. D. Chester (Delaware Sta. L'pt 

 1896, pp. 51-59. fig. 1, dgm. 1).— This is a reprint from Bulletin 29 of the station (E. 

 S.R.,7,p.785). 



The spraying of orchards: Apples, quinces, and plums, E. G. Lodeman (New 



