CORAL GALLERY. 
43 
Parallel with the bird gallery to the north side (right on enter- Coral Gallery. 
ing), and approached by several passages, is a long narrow gallery Guidefprice 
containing the collection of corals and of sponges and allied forms. 6d.) 
Commencing at the eastern end, some of the lowest forms of 
animal life are exhibited in the wall-case and table-cases ; they 
belong to a group called Protozoa, and, for the greater part, 
Fig. 17. — A Brain-Coral (Meandrina cerebriformis). 
are so minute, that they can be studied with the microscope 
only ; their structure is therefore illustrated by means of models 
and figures. The next divisions of the gallery are occupied by the 
sponges ; most conspicuous among these is a series showing the 
variations of the common bath-sponge (cases land 2), the beauti- 
ful siliceous Uupledella or Yenus' flower-basket (fig. 16), the 
Japanese Hyalonema or glass-rope sponge (case 3), and the 
gigantic Poterion or Neptune's cup, of which several speci- 
mens are placed on separate stands. Special interest attaches 
