4312 TuE ZooLoGist—FEBRvARY, 1875. 
(Asplenium marinum) that line some of the crevices of the upper 
part of the “chimney,” very high up, and, from their luxuriance, 
appearing never to have been rifled even by the most adventurous 
of collectors. At the foot we enter the upper cave, “giving many 
a varied view of the small but picturesque ‘ Havre Gosselin,’ seen 
through the opening at the further extremity.” “ But this cavern,” 
says Prof. Ansted, “though fine, is as it were a ‘mere outer court,’ 
preparing us for the glories to be revealed within.” Itis not worth 
mentioning the character of life contained in this upper cave, as it 
is not numerous and is almost identical with what is found in the 
interior. There are two ways of entering the interior caverns from 
this outer court, one almost at right angles with the “ chimney,” but 
there is a pool of water in the middle, the depth of which is uncer- 
tain, and although it may be exaggerated, it is best, as the cavern is 
dark, to keep on the right or north side, where there is a curious 
double porch-like opening in the rock, sufficiently wide to admit a 
man. Passing through this, and watching the earliest opportunity for 
the tide to ebb in the little bay, so as to get as much time as possible 
in this submarine palace, one bends round to the left and enters a 
long vestibule, with good-sized stones at bottom, on which one steps 
to avoid the water still lying in the middle, but which will subside 
with the ebbing tide. Southward from this, opens “ Cube” Cave, of 
wedge-shaped form, and approached by a narrow hole, so low that I 
received a blow on the head from the top which I did not soon forget. 
In this cavern the first impression is received of the vast amount of 
animal life herein contained. One kind of life only appears domi- 
nant. It is the hydroid zoophyte, Tubularia indivisa. ‘The walls of 
the cavern are absolutely lined with it, the small horny tubes standing 
out like chevaux de frize, from the openings of which tubes are occa- 
sionally seen the lovely heads of scarlet tentacula. Some specimens 
of T. Dumortierii are scattered about. Outwards towards the sea, 
there is a circular opening called “ Wind” Cave, which I was not 
able to visit, and which I am told is not particularly interesting. 
Retracing one’s steps, therefore, and pursuing the dark course of 
the vestibule (as I term it), lighted, as all these caves are, mainly 
from the sea, the path widens and bifurcates, in consequence of an 
obstruction from a pillar-like mass of rock, and the sanctum sanc- 
torum or “ Lower” cave is now reached. And the sensations of 
even the most indifferent person who is not a naturalist, cannot 
fail to be other than those of awe and wonder, which, in the latter 
