44 
WHALE ROOM. 
of the gallery; and along the sides are placed some small 
table-cases containing series of the eggs of MoUusca and of 
the opercula, or lids, by means of which the opening or mouth 
of the shell is closed in some forms ; also specimens illustrating 
the formation of pearls, and other points of special interest 
connected with the class. 
'SI 
Fig. 16. — Pearly Nautilus. 
a, body ; &, siphuncle ; c, eye ; d, hood ; e, tentacles ; /, muscle of attachment 
to the shell ; g, siphon. 
Fig. 17. — Tadpole of Frog and Ascidian. 
(From Lankester's ' Degeneration.') 
Whale Eoom. 
Whale Room. Approached by a staircase, leading from the last (or western- 
most) of the passages which connect the bird gallery with the 
coral gallery, is a separate room in which are placed the specimens 
of whale-like animals. For these, on account of their large size, 
no other place could be found in the portion of the Museum 
