204 'MOKPHOLOG Y. 



shown in fig. 238. Finally, as shown in fig. 239, this veil is 

 ruptured by the expansion of the pileus, and it either clings 



Fig. 238. 



Agaricus campestris ; nearly mature plants, showing veil still stretched across the giH 

 cavity. 



Fig. 239. 



Agaricus campestris ; under view of two plants just after rupture of veil, fragments of the 

 latter clinging both to margin of pileus and to stem. 



