1897 | THE PHALLOIDEA: OF THE UNITED STATES 79 
volva was carefully cut away from one of the halves and they 
were both placed in the supporting apparatus already described. 
They were covered by a bell jar, but no moist paper was placed 
under the jar. 
Length of half Length of half 
Time with volva with volva removed 
5 * oo) PM. es z - Ps I |e eva I 16™™ 
7:30 A.M.of next day - 157 151 
Experiment 5.—On October 10, an egg collected October 9 
was divided longitudinally. Elongation was just beginning; the 
outer layer of the volva was ruptured but the innermost was 
still intact. It was necessary to loosen the volva from the sur- 
face of the gleba and the stipe. The volva was carefully cut 
away from about the base of one of the halves and they were 
then placed in the supporting apparatus under a bell jar. No 
moist paper was placed under the jar. 
Length of half Length of half 
Time i with volva removed 
O:ig ae. = ? é : 46™™ 
12:45 P.M. . - - - 82 81 
It seems safe to conclude from Experiments 3-5 that elonga- 
tion of the receptaculum does not result from any contribution 
made by the volva during the process. One must look to the 
receptaculum itself and to the tissues lying next to its walls for 
the causes producing it. 
The receptaculum walls in this stage consist of pseudo- 
parenchyma so swollen as to show but little trace of its hyphal 
origin; the chambers contain a tissue highly gelatinous but 
still showing its hyphal character. The tissue originally occu- 
pying the main central cavity of the stipe has the condition of 
a glairy mass which becomes still more fluid as elongation 
progresses. 
Microscopic examination of one of the folds of the wall just 
at the beginning of elongation shows that the cells are slightly 
wedge-shaped at the inner angle of the fold as though com- 
Pressed, while on the outer surface of the fold they are some- 
what flattened as though stretched out there. The cell-like 
