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Case (>.— Five seals, among them the sea elephant from the 
Kerguelen Islands. 
Case 7.— Group of llamas, alpaca and vicugna. 
Case 8.— Group of orang-utans. This case, was presented 
by Mr. Martin A. Ryerson, and the taxidermy was done by Mr. 
Akeley. The group consists of an old male, a young male, two 
females and two young. This family is represented as being in 
the top of a durio bread-fruit tree, where they are engaged in 
securing the fruit and disporting themselves. 
Case 9.— Northern fur seal, male, female and young, and a 
Steller’s sea lion from the Pacific coast. 
COLLECTION OF MOLLUSKS. 
The remaining cases in this court are flat cases on tables and 
are devoted to exhibiting the collection of brachiopod and mol- 
luscan shells. . The visitor is supposed to begin with Case No. 8, 
at the west end of the row on the north side of the court. Only 
the principal families in each case will be referred to here. 
The collection of Mollusca contains some 4,000 or more 
species. It is believed to represent fairly well the subject of con- 
chology, since a large proportion of the genera and important sub- 
genera are present. 
Case 8. — An attempt has been made in this case to illustrate 
some of the facts of evolution, such as distribution in time and 
space, the evolution and extinction of species and the adaptation 
of species to their environment. 
Case 9 .— At the west end of this case is placed the small 
collection of Brachiopoda. 
These are not Mollusca, but owing to the fact that their shells 
much resemble the shells of the Lamellibranchiate they were for 
a long time associated together. The Brachiopods were very 
numerous in paleozoic times. 
The mollusca proper begin in this case with the Anatacea 
represented here by PandoridcE, at present nearly extinct, though 
very abundant in geological time, their remains being found in 
the oldest paleozoic rocks. 
