80 
SPONGES 
Fig. 40. 
ie 
jee 
wae 
\ } 
\ LEG 
\ 4 
\ \ ‘- 
NEL MAY. 
A, Limy Sponge. 
wT 
NVA 
Hi iy 
HH 
Wy i 
B, section of same. 
Fig. 41. 
A, section of Fleshy Sponge, show- 
ing water system; B, portion of 
entoderm, from above: O, same in 
section ; all figures magnified about 
50 diameters. 
