+0 SPONGES 
Another abundant species of Goat Sponge is the Fringing Sponge, whieh 
grows in very shallow water and which is irregular in form, but which often 
extends along rocks and dead corals like a fringe. 
Another horny sponge worthy of note isthe Net Sponge, Fig. 20, which 
has an exceedingly coarse net-like skeleton, but which in hfeis covered witha 
dense sarcode which is about the consistency of liver, but which is ofa green- 
ish color. 
seas 
Loe 
Palm Sponge. Branching Sponge. 
Net Sponges occur in from four to twenty feet of water, and usually graw 
in, regular masses with mound-hke openings, which are often partly closed by 
a membrane. (See Fig. 20, and also remarks on page 21 and following in re- 
gard to this membrane. ) 
A remarkable sponge which has a greatly enlarged tube, is the Giant 
