PLATE XXXIX, 



A-F. Mature oogonia, oospores and antheridia of P. infestans, p. 770. 

 G-I. Oogonia-like bodies found in blighted leaves and tubers of potatoes, p. 756. 

 J. Oogonia of P. caclonim and K, hybrid of this and P. infestans, p. 773. 



OOHONIA OOSPDRFS ANTHFRIDIA OF PHYTOPHTHORA snc e tr. 



