Fig. ifi.Nectria solani, figures illustrating its life-cycle, i, portion of a diseased 

 tuber, and section through a conidial stroma ; 2, Monosporium fruit ; 3, conidia of same 

 germinating ; 4, Fusarium stage, following the Monosporium condition ; 5, Fusarium 

 conidia, germinating and producing the Cephalosporiumsi&ge ; 6, stroma that has pro- 

 duced Monosporium and Fusarium conidia, bearing young perithecia, or the commence- 

 ment of the ascigerous condition ; 7, section of a mature perithecium ; 8, asci containing 

 spores, also paraphyses ; 9, ascospore germinating. The tuber in Fig. 1 reduced ; the 

 remainder highly mag. 



