320 RESEARCHES ON FUNGI 



cell-wall, the protoplasm is extended as a coarse foam, the foam 



Fig. 141. — Coprinus lagopus. Size and form of the cells of the fvigaciou.s hairy 

 scales on the pileus. A : from a medium-sized fruit-body in a pure culture ; 

 a, two cellular filaments of a single scale sketched with a magnification of 

 50 diameters, the larger cells were next to the pileus-flesh ; h, the cells of the 

 upper filament of a on a larger scale ; c, the apical cells of two other filaments. 

 B : a, large and vigorous fruit-body from a pure culture ; h, three of the largest 

 cells from filaments of scales on a. C : a, a small fruit-body coming up spon- 

 taneously on horse dung in the laboratory at Winnipeg ; b, largest cells from 

 the ends of filaments in its scales. D : a, two very small fruit-bodies which 

 came up spontaneously on rotting seeds (mangold, beet, and sainfoin) in 

 England ; h, largest cells from the ends of the filaments in their scales. A com- 

 parison of A, B, C, and D shows that the largest cells in the pilear scales of 

 C. lagopus tend to increase in size with increase in size of the fruit-body. The 

 fruit-bodies all natural size. A, a, magnification 50. A, b and c ; B, 6 ; C, 6 ; 

 and D, b ; magnification, 225 ; the size of each cell can be measured with 

 the scale. 



filling up one end of a cell or extending from a lateral wall toward 

 the cell's central axis. 



