158 F. Petra k: Pflanzenkrankheiten 1921 [52 



Agric. Eesearcli. XXI, 1921, p. 575 — 587.) — Beizung der Bataten mit 

 Sublimatlösung. 



625. Wille, J. Clilorpikrin als Schädlingsbekämpfungsmittel 

 in seinen Wirkungen auf Tier und Pflanze. Überblick und Lite- 

 raturübersicht. (Naturwiss. VIII, 1921, p. 41 — 48.) 



626. Zacher, F. Neuzeitliche Schädlingsbekämpfung. (Die 

 Gartenwelt XXV, 1921, Nr. 9, p, 84 — 87.) — Forderung einer zweckmäßigen 

 Organisation der Schädlingsbekämpfung. 



627. Zundel, G. L. The effects of treatment for bunt on the 

 germination of wlieat. (Phytopathology XI, 1921, p. 469 — 484.) — 

 Summary: 1. Due to the dry atmosphere at the time of harvest in the state 

 of Washington the wheat kerneis are generally dry and brittle at the time 

 of threshing. When such wheat is threshed in machines, with high speed 

 cylinders, the seed coats are badly cracked. 2. Subsequent treatment of this 

 wheat with fungicides causes a high percentage of injury to germination. 3. The 

 Injury to seed wheat varies for the different lots of a given variety except 

 that injury is general for samples obtained from various wheat sections of 

 the Pacific Northwest, and varies for the different lots of a given variety. 



4. This injury can be overcome by presoaking in water before using a fungicide 

 followed by dipping in lime. This, however, is not practical on a large scale. 



5. The most practical method to use in the control of seed injury is to dip 

 tle wheat in lime water after treating with copper sulphate or formaldehyde. 



XVIII. Verschiedenes 



628. Anonym. Pathological Herbarium Notes Nr. 2. (U. S. Dept, 

 Agric. Bur. PL Industry, Office Path. Collect. Washington 1921, 15 pp.) 



629. Christie, W. Die Vererbung gelbgestreifter Blattfarbe bei 

 Hafer. (Zeitschr. f. indukt. Abstammungs- u. Vererbungslehre XXVII, 1921, 

 p. 134—141.) 



630. Ciamiciani, G. e Ravenna, C. Sull'influenza di alcune 

 sostanze organiche sullo svilluppo delle pianti. Nota V. (Atti 

 K. Accad. Naz. dei Lincei, Roma, Rendic. fasc. 30, 1921, p. 3 — 7.) 



631. Collett, R. L. Longevity of spores of a fungus in a museum 

 specimen. (Trans. Brit. Mycol. Soc. VII, 1921, p. 217—218.) — Siehe „Pilze", 

 üef. Nr. 223. 



632. Cook, 31. T. Falling folliage. (Phytopathology, vol. 11, 1921, 

 p. 337 — ^339.) — ■ Ursachen des Blattabfallens der Bäume. 



633. Doyer, L. C. Eenige saprophytische en parasietische 

 Schimmels op kiemende zaden aangetroff en. (Med. v. d. Nederl. 

 Mycolog. Vereenigung XI, 1921, p. 60 — 65.) 



634. Eriksson, J. The mycoplasm theory — ■ is it dispensable 

 or not? (Phytopathology XI, 1921, p. 385— 388.) — Siehe „Pilze", Ref. 

 Nr. 228. 



635. Etter, B. E. Field-cultures of wood-rotting fungi in 

 agars. (Phytopathology XI, 1921, p. 151—154.) 



636. Faes, H. Les caracteres du Mildiou 1920. (Terre Vaudoise 

 XIII, 1921, p. 215—216.) 



