236 RESEARCHES ON FUNGI 



In Fig. 101 at A is shown a vertical section through three gills 



taken in the direction o — j) 

 in Fig. 97, F (p. 232); and 

 in Fig. 101 at B is shown 

 a small piece of a gUl in 

 surface view (c/. the sur- 

 face view of the right- 

 hand gill in Fig. 97, F in 

 the region crossed by the 

 line o — 'p). In both A 

 and B the magnification 

 is only 13 diameters, and 

 yet the spores on the 

 hymenium are clearly 

 distinguishable owing to 

 their extremely large size. 

 The arrows show the 

 directions of movement 

 of the spores as these are 

 shot outwards from the 

 zone of spore-discharge 

 into the interlamellar 

 spaces in still air. In the 

 drawing A, one may ob- 

 serve : the subparallel- 

 sidedness of the gills, the 

 splitting of the gills from 

 above downwards, the 

 broad interlamellar spaces 

 which reference to the 

 scale shows to be about 

 1 mm. wide, and that the 



Fig. lOO.—Coprinussterquilinus. Fruit-body in a very late stage of development, 

 growing on sterilised horse dving in a glass dish (same fruit-body as that shown 

 in Fig. 99). The pileus has become torn into rays, some of which are weighed 

 down by dark drops — the liquid products of the autodigestion of the gills. 

 The stipe is abnormally twisted. The blackness of its upper portion is due to 

 a black pigment and not to the deposition of spores. However there are 

 some spores on the upper side of the stipe just above the dung. Reduced to 

 I natural size. 



