SPORE-FORMATION. 



307 



a a' 



Fig. 55. Germination of the spores of Saccharomyceg Ludwiqii (after Hansen). a-c, Gypsum- 

 block cultures twelve days old ; d-h, a similar culture six weeks old. 



Fig. 56.Saccl>aromycts Ludwigii (after Hausen). Germinating spores from old gypsum- 

 block cultures ; a and b, each spore has developed a germ-nlaraent ; c, shows different forms 

 produced by fusion. 



