“160 THE DEPTHS OF THE SEA. [CHAP. Iv. 
a beautiful double fenestrated frame, with a peculiar 
twist in it reminding one of a Campylodiscus, and a 
very elegant crenated border. ‘These disks are raised 
on delicate hollow pedicels, which expand beneath, 
at their point of attachment to the common stalk. 
A large mass of muscle envelopes the lower part of 
the group of pedicels, and doubtless determines the 
movement of the valves in reference to one another. 
It is difficult to see what relation in position the 
valves can occupy when the instrument, whatever 
may be its use, is closed. 
We now steamed onwards to the south-east for 
about ten miles, and put down our dredge, fully 
equipped with ‘ hempen tangles’ and every accessory 
device for entrapping the denizens of the deep, exactly, 
as our Commander assured us, over the spot where we 
had dredged the ZHolteniw early in the cruise. We 
vot there in the evening, and adopted a plan which 
we had tried successfully once or twice before; we 
allowed the dredge to remain down all night, moving 
along with the drift of the vessel, and hauled it up 
in the early morning. I do not believe human 
dredger ever got such a haul. The special inhabit- 
ants of that particular region—vitreous sponges and 
echinoderms—had taken quite kindly to the tangles, 
warping themselves into them and sticking through 
them and over them, till the mass was such that we 
could scarcely get it on board. Dozens of great Hol- 
tenia, like 
‘“‘Wrinkled heads and aged, 
‘With silver beard and hair,” 
a dozen of the best of them breaking off just at 
that critical point where everything doubles its 
