3. Kraukheiten einzelner Pflanzen iind POanzenginippen. 521 



227 Anonym. Potato disease. 



238 — Potato disease. 



242 — Potato disease. 



245 — Peronospora infestans. 



262 — Sclerotioids of potato disease. 



264 — Abwehr der Kartoffelkrankheit. 



292 — Blaugraue Flecke der Kartoffehi. 



294 — Kartoffelkrankheit. 



295 — Mittel gegen die Kartoffelkrankheit, 



296 — Verhalten der wilden Kartoffel zur Kartoffelkrankheit. 



297 — Kartoffelkrankheit. EinfhiB der Kulturmethode auf die 

 Widerstandsfahigkeit. 



323 ■ — Potato disease. 



331 — Potato disease. 



343 — Potato disease. 



344 — Nutzbarmachung kranker Kartoffehi. 



370 — Moyens de combattre la maladie de la pomme de terre. 



373 — Potato-experiments in Ireland. 



374 — Verhiitung der Kartoffelkrankheit. 



375 — Bekampfung der Kartoffelkranklieit. 

 461 — Maladie des pommes de terre. 



465 - — Some potato diseases. 



503 — Black scab of Potatoes, Oedomyces leproides. 



511 — Disease of the Potato. 



520 — Disease in Potatoes (Sphaerella tabifica). 



523 ■ — Diseases Evergood Potatoes. 



524 — Blackleg in Potatoes. 

 528 — Potato leaf-curL 



530 — Potato scab. 



29803 — Potato-bUght gauge. 



29819 — The potato disease. 



29835 — Renseignements sur la maladie des pommes de terre. 



29837 — Sulphate of copper for potato disease. 



29839 — • Potato disease and copper treatment. 



29840 — - Copper salts for potato disease. 



29843 — Potato disease prevention. 



29844 — Experiments in potato rot. 



