Mutinus caninus ( Huds .), Fr . 359 
central column 7 ? and the rudiment of the wall >S. Such 
a condition does not generally exist ; for in M. caninus the 
rudiment of the stipe S' and the central column R are in close 
contact (Figs. 9 and 11). 
The hyphae of the rudiment S, Fig. 9, are richer in proto- 
plasm than they are in other portions of the intermediate 
tissue. This protoplasm does not form a continuous mass 
distributed uniformly throughout the length of each hypha, 
but is broken up into short masses, as shown in the figure. 
It is possible that this appearance of the hyphae is due to 
their being cross-septate into short cells, but I could not be 
sure of this. 
Eighth egg . — In this more advanced intermediate stage 
(Fig. 10), the egg has become elongated — measuring 9 by 
5 mm. — and its parts have undergone important changes. By 
the repeated formation of folds and the growing together of 
such folds where they came into contact, the gleba has become 
a structure of innumerable closed or labyrinthine chambers 
lined by the hymenium, the basidia of which now bear 
spores. There is no longer a cavity between the gleba and 
the intermediate tissue A. Where the lobes of the former 
have pressed against the latter, the tramal tissue has grown 
out against the tissue A. It is by such growth that the gleba 
becomes adnate to the stipe in the older stages. 
The stipe has become more fusiform, and a chambered 
structure is beginning to form in its wall. Under a magni- 
fication of sixty diameters, the future chambers show as light 
areas marked out from the more deeply stained portions 
which become their walls. Under higher magnification 
(Fig. 11), the transition from the light areas c , c to the 
darker portions is so gradual that one cannot fix upon any 
point at which the light portion c ends and the darker part 
begins. The tissue composing both the future chambers and 
their walls was so dense, and the lateral inflations of the 
hyphae were so irregular in form, as to make it quite im- 
possible in a camera-lucida drawing to follow the hyphae 
accurately in sections attached to the slide and mounted in 
B b 
