162 



MICRO-ORGANISMS AND FERMENTATION. 



in these cells. They appear to play a certain part in the life 

 economy of the growth, as durative cells, for these cells are 



FIG. 45. Durative cells (after WILL). A, mode of germination most frequently 

 found ; B, durative cells, having produced club or sausage-shaped daughter cells, 

 with transverse walls. 



sometimes found alive in old growths after most of the other 

 individuals have perished. In artificial nutrient solutions 



