Pethybridge — On the Rotting of Potato Tulers. 561 



Peters and Schwartz^ state that the oospores of P. Nicotianae are formed 

 iu a similar way to those of Pythium debaryanum, that is, by the lateral pene- 

 tration of the oogonium by the antheridium and the passage of the whole 

 contents of the latter into the former. I have not been able up to the present 

 to confirm this ; but if it is the ease, this fungus would then find a place, as 

 already suggested, in the new genus Nozemia. 



IX. Bibliography. 



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Bedeutung des Kartoffelpilzes Phellomyces selerotiophorus Frank. 

 Arb. a. d. Kais. Biol. Anstalt f. Land- u. Forstwirtsehaft. Bd. v, 1907, 

 p. 435. 



2. Appel, 0., und Wollenweber, H. W. : Grundlagen einer Mono- 



graphie der Graltung Fusarium (Link). Arb. a. d. Kais. Biol. 

 Anstalt f. Land- u. Forstwirtsehaft. Bd. viii, 1910, p. 1. 



3. Bary, a. de : Researches into the nature of the Potato fungus, Plnj- 



tophthora infestans. Journ. Bot., vol. xiv, 1876, p. 105, and p. 149, and 

 Journ. Roy. Agric. Soc, England, Ser. 2, vol. sii, 1876, p. 239. 



4. CiJNTON, Gr. P. : Downy mildew, Phytophthora Phaseoli Thaxt., of 



Lima Beans. Rep. Conn. Agric. Exp. Sta., 1906, p. 278. 



5. Artificial culture of Phytophthora, with special reference to 



Oospores. Piep. Conn. Agric. Exp. Sta., 1909, p. 891. 



Oospores of Potato Blight, Phytophthora infestans. Rep. Conn. 



Agric. Exp. Sta., 1911, p. 753. 



7. Coleman, L. C. : Diseases of the Areca Palm. Bangalore. 1910. 



8. Faber, F. C. von : Die Krankheiten und Parasiten des Kakaobaumes. 



Arb. a. d. Kais. Biol. Anstalt. Bd. vii, 1909, p. 199. 



9. Frank, F, : TJeber die Ursachen der Kartoffelfaule. Centralblatt f. 



Bakteriologie, Abt. ii, Bd. iii, 1897, p. 15. 

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1897, p. 182. 

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Antonio Alzate, vol. xxv, 1908-9. 

 *11. Haan, J. VAN Breda de : Voorloopig Rapport over de bibitziekte in 



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1896. (Abstract in Centralb. f. Bakteriologie ii, Bd. ii, 1896, r 



' Peters L. and M. Schwartz. Krankheiten und Beschadigungen des Taoaks. "^ 

 Biol. Anstalt f. Land- u. Forstw. Heft. 13. 1912, p. 12. 



SCIKNT. PEOC. R.D.S., VOL. XIII., NO. XXXV. 



