WART DISEASE OF THE POTATO. 11 



1908. Spieckermann. Ueber das Vorkoiiimeu von Chr}imphhjctis endohiotica Schilb. 



ill Westfalen. Praktische Hliitter fiir Pflanzenbau unci Pfianzenschutz, 

 vol. 6, October, 1908, p. 113. 



1909. Ericksson, J. Hvitr()ta och Krilfta a potatis. Centralanstalten for Jord- 



bruksforsok, Flygblad, no. 8, February, 1909. 



1909. Grosser. I)er Kartoffelkrebs: Zeitachrift dor Landwirtschaftliche Kammer 

 fur d. Provinz Schlesien, vol. 13, 1909, p. 614. 



1909. GtJssow, II. T. A serious potato disease occurring in Newfoundland. Bul- 

 letin 63, Department of Agriculture, Central Experiment Farm, Ottawa, 

 Canada, October, 1909. 



1909. Johnson, T. Chri/sophlydis endubiolira Schilb. (potatt) wart or black scab) 

 and other Chytridiaceaj. The Scientific Proceedings of the Royal Dublin 

 Society, vol. 12, no. 14, June, 1909. 



1909. Kreitz. Mitteilung iiber einige Kartoffel Krankheiten. Illustrierte Land- 

 wirthschaftliche Zietung, vol. 29, 1909, p. 176. 



1909. Percival, JonN. New facts concerning Avarty disease of potato. The Gar- 

 deners' Chronicle, 3d ser., vol. 46, no. 1179, 1909, p. 79. 



1909. Remy, T. Der Hackfruchtbau, vol. 1, Der Kartoffelbau, Berlin, 1909, p. 135. 



1909. RiEHM, E. Der Kartoffelkrebs und seine Bekiimpfung in England. Illus- 



trierte Landwirthschaftliche Zeitung, vol. 29, 1909, p. 415. 



1910. Divers, W. H. Wart disease of potatoes. The Gardeners' Chronicle, vol. 



47, 1910, p. 13. 



Approv^ed: 



James Wilson, 



Secretary of Agriculture. 



Washington, D. C, Felruary 4, 1910. 

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