CHAP. V.] THE GULF-STREAM. Ode 
Ole 
On the following day we sounded in 2500 fathoms; and on 
the 29th in 1075 fathoms, in sight of Bermudas, with a bottom 
of coral mud. The dredge was put over and veered to 1600 
fathoms. It came up at noon with the pasty, mortar-like, life- 
less contents which we find almost constantly on the slopes of 
coral reefs; the lime sediment was mixed with a large propor- 
aa, 
=", 
= 
pe? FP.) 
eee? |i 
s 
? 
é\3 
p\J 
Fia. 105.— Ophioglypha bullata, WxviLLE Tuomson. Oral aspect. Five times the natural 
size. (No. 54.) 
tion of the shells of pteropods and heteropods. Two fine speci- 
mens of a hexactinellid sponge were hanging to the tangles, 
both unfortunately dead and slightly water-worn. The largest 
specimen, which seems to be nearly complete, is 120 mm. in 
height, and shaped somewhat like an old-fashioned tall cham- 
pagne-glass. It rests on a very solid hard base of attachment ; 
it then contracts to a kind of stem, and then gradually expands 
