262 EXPERIMENT STATION RECORD. 



caused longer heating of the houses than usual and less frequent ventilation. As 

 preventive measures he suggests more thorough ventilation and treating the soil 

 with a small quantity of iron or copper sulphate. 



Damping off of young cucumbers, E. Jexkixs {Gard. Chron., 3. ser., 27 {1900), 

 No. 700, pp. 324, 325). — The author agrees with a previous writer that lack of venti- 

 lation is a cause of the destructive occurrence of the fungus which causes this disease 

 in forcing houses. 



Some diseases of orchard fruits {Deut. Landw. Presse, 27 {1000), No. .57, pp. 

 720, 721, fig. 1). — Notes are given on apple scab due to YentnrUi inxqunlln and Fum- 

 cladium doidrltirvm, and j^ear seal) caused bj' F. pyrinum. 



Some observations on apple-tree anthracnose, A. B. Cordley {Bot. Gaz., 30 

 {1900), No. 1, ])p. 48-58, figs. 12). — Notes are given on the life history of Glceosporium 

 malicorticis, the fungus which is said to be the cause of apple-tree anthracnose in 

 Oregon (E. S. R., 12, p. 58). 



The European apple canker in America, W. Paddock {Science, n. ser., 12 

 {1900), No. 295, pp. 297-299, fig. l). — Specimens of diseased ajiple twigs have been 

 received by the author from Nova Scotia and also from Cortland County, New York, 

 which have been determined by Dr. R. Hartig as infected with the European apple- 

 tree canker {Nectria ditissima). It is thought that this is the first record of the dis- 

 ease in America. 



A gooseberry and currant disease, G. Massee {Gard. Chron., 3. ser., 27 {1900), 

 No. 698, p. 290, fig. 1). — This disease which is due to Ploicrightia ribesia is said to 

 have been rather abundant on gooseberries and currants, where it forms large, wart- 

 like, black bodies, which burst transversly through the bark. A number of success- 

 ful inoculation experiments were conducted by the author W'hich showed that the 

 organism is one of the wound fungi. As infested branches are invarial)ly killed by 

 it, it is suggested that they should be removed and burned on the first appearance 

 of the disease. 



The treatment of mildew and the preparation of copper fungicides, L. 

 DEciRULLY {Prog. Agr. rf Vit. {Ed. UEst), 21 {1900), No. 19, pp. 549-557, fig.^. 2).— 

 Suggestions are given for treating grapes for mildew and formulas and directions for 

 making a number of the more efficient fungicides. 



Winter treatment against grape mildew, L. Degrully {Prog. Agr. et Vit. 

 {Ed. L'Esf), 21 {1900), No. 12, pp. 347, 348). — The proper time for combating mil- 

 dew is in the spring and sununer, winter treatments not giving results commensurate 

 with their cost and labor. Bordeaux mixture. Burgundy mixture, and verdigris are 

 recommended as the fungicides best adapted to the prevention of grape mildew. 



Treatment of grape mildew, J. Artigala {Messager Agr., 5. ser., 1 {1900), No. 6, 

 pp. 218-223). — Formulas anil directions for application are given for a number of 

 fungicides, among them Bordeaux mixture, Burgundy mixture, ammoniacal copper 

 carbonate, verdigris, neutral copper acetate, copper sulphate, corrosive sublimate, 

 potassivmi permanganate, cadmium sulphate, and solutions containing sugar, resin, etc. 



Potassium permanganate for combating grape mildew, C. Trichot {Prog. 

 Agr. et Vit. {Ed. UEst), 21 {1900), No. 11, p. 320).— ^otes the successful use of this 

 fungicide against mildew, etc., of the grape. 



Coulure of grapes, L. Ravaz {Zfessager Agr., 5. ser., 1 {1900), No. 5, pp. 168-171). — 

 Under this name the author describes a disease of grapes that seems to be prob- 

 ably identical with that described by Lodeman (E. S. R., 6, p. 732) under the name 

 "shelling" or "rattling" of grapes. 



The rusts of florists' plants, B. D. Halsted {Amer. Florist, 15 {1900), No. 623, 

 p. 1268). — I'riefiy describes the rusts of liollyhocks, carnations, and chrysanthemums. 



A natural check for carnation rust, F. H. Bi.odgett {Amer. Flori.st, 15 {1900), 

 No. 623, p. 1268, figs. 2). — Gives brief poi)ahu- notes on the parasite {Darluca filum) of 

 carnation rust. 



