Neue Litteratur. 41 



Canter Visscher, W. A. E. A. 1917. Het uitzwavelen van zwaar aan- 



getaste tuinen. (Med. Proefstat. Thee. Batavia. 1917. 46. p. 16— 20). 

 Carpenter, C. W. 1918. Wilt diseases of okra [Abelmoschusesculentus] 



and the Verticillium-wilt problem. (Journ. agr. Res. XII. p. 529 — 546). 



12 pl.) 

 Chupp, C. 1917. Studies on clubrot of cruciferous plants. (Bull. 



Cornell agr. Exp. Stat. 1917. 387. p. 421 — 452. f. 95—110.) 

 Cook, M. T. 1917. A Nectria parasitic on Norway maple. (Phytopa- 



thology. VII. p. 313—314.) 

 Cook, M. T. and W. EL Martin. 1917. Diseases of tomatoes. (Circ." 



New Jersey agr. Exp. Stat. 1917. 71. p. 1—8 6 f.) 

 Coons, G. H. 1916. An undescribed bark canker of apple and the 



associated organisms. (Annual Rep. Michigan Ac. Sc. XVII. 



p. 117—122. 1 pl.) 

 Coons, G. S. 1916. The Michigan plant disease survey for 1914. 



Annual Rep. Michigan Ac. Sc. XVII. p. 123—133. 4 pl.) 

 Cotton, A. D. 1918. Diseases of parsnips. (Kew Bull. 1918. p. 8—21. 



2 f. 2 pl.) 

 Darneü-Smith, G. P. 1917. Ueber eine Krankheit der Zwiebeln bei 



Narcissen und anderen Pflanzen in Neu-Südwales. (Intern, agr.- 



techn. Rundschau. VIII. p. 588-589.) 

 Boolittle, S. P. 1916. Cucumber scab caused by Cladosporium cucu- 



merinum. (Annual Rep. Michigan Ac. Sc. XVII. p. 87 — 116.) 

 Dufrenoy, J. 1918. Sur les tumeurs du pin maritime. (C. R. Ac. Sc. 



Paris. CLXVI. p. 355-356.) 

 Eriksson, J. 1918. Developpement primaire du mildiou (Phytophtora 



infestans) au cours de la Vegetation de la pomme de terre. [suite]. 



(Rev. gen. Bot. XXX. p. 16—30, 50-61.) 

 Falck. 1918. Eichenerkrankung in der Oberförsterei Lödderitz und 



in Westfalen. (Zschr. Fort- u. Jagdw. L. p. 123.) 

 Fromme, F. D. und H. E. Thomas. 1917. Xylaria sp. als Ursache 



der Wurzelfäule des Apfelbaumes in Virginia. (Intern, agr.-techn. 



Rundschau. VIII. p. 596.) 

 Gilbert, A. H. and C. W. Bennett. 1917. Sclerotinia trifoliorum, the 



cause of stem rot of clovers and alfalfa. (Phytopatholoery. VII. 



432—442. 5 f.) 

 Gravatt, G. F. and R. P. Marshall. 1917. Arthropods and gasteropods 



as carriers of Cronartium ribicola in greenhouses. (Phytopathology. 



VII. p. 368-373.) 

 Gravatt, G. F. and G. B. Posey. 1918. Gipsy-moth larvae as agents 



in the dissemination of the white-pine blister-rust. (Journ. agr. 



Res. XII. p. 459—462.) 

 Hedgcock, G. G. and N. R. Hunt. 1917. Notes ou Razoumofskya cam- 



pylopoda. (Phytopathology. VII. p. 315—316.) 

 Hemmi, T. 1917. On Septoria parasitic on the cultivated Chrysan- 

 themum. (Bot. Mag. Tokyo. XXXI. p. (309)— (325) ill. Japanese.) 

 Howitt, J. E. 1917. Phytophthora infestans, causing damping-off of 



tomatoes. (Phytopathology. VII. p. 319.) 

 Hutchinson, C. M. 1917. A bacterial disease of wheat in the Punjab. 



(Mem. Dep. Agr. India. I. p. 169— 175? 4 pl.) 

 Jackson, H. S. 1917. Two new forest tree rusts from the north-west. 



(Phytopathology. VII. p. 352—355.) 

 Jehle, R. A. 1917. Susceptibility of non-citrus plants to Bacterium 



Citri. (Phytopathology. VII. p. 339-344. 3 f.) 

 Jones, L. R. 1918, Disease resistance in cabbage. (Proc. nation. Ac. 



Sc. IV. p. 42-46. 2 f.) 



