I5S DISEASK I\ PLANTS. 



tions of the Structure and Life-history of Phytophthora 

 infestans," (2iiarL Joinvi. Micros.c. Soc, Vol. XXVI L, 1887. 

 p. 413; also Marshall Ward, "Researches on the Life- 

 history of Hemileia vastratrix," Journ. Linn. Soc., Vol. 

 XIX., 1882, p. 299; and "On the Morphology of Hemileia 

 \'astatrix," Oun?-/. Journ. .Microsc. Soc, 1881, \^ol. XXL, 

 p. I. 



