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34. "Further Observations on Powdery Potato-Scab, SpongoA 



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 No. 16 (1909), p. 165. | 



35. H. JosTiNG. Deut. Landw. Presse, 36. No. 68, pp. 725-726 (1909). 



36. G. DE Lagerheim. "Remarks on the fungus of a Potato Scab." Jour, of 



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37. R. S. Macdotjgall. " New fungus disease of Potatoes {Chrysophlyctis 



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38. P. Magnus. "Annals of Botany," p. 87 (1897). 



39. " The Warty Disease of Potatos." Gard. Chron., xxxiii., 



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40. Jour. Roy. Hort. Soc, XXVII., p. clxxix. (Oct. 13, 1903). 



41. G. T. Malthouse. " Black Scab in Potatoes." Leaflet, Harper Adams, 



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42. "Black Scab and Wart Disease of Potatoes." Leaflet,\ 



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43. "A Shropshire Scourge and its Remedy." Newport! 



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44. — • " Wart Disease of Potatoes." Suppl. Bull, to Annuali 



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45. " Wart Disease of Potatoes {Synch ytrium endobioticum,{ 



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46. C. E. P. VON Martitjs. Comp. rend, des seances de VAcademie des\ 



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48. " Ueber die Krankheiten der Kartoffeln." Deutsch Naturf. 



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49. ■ " Die Kartoffel-Epidemie der letzten Jahre oder die 



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