by passing through the north end of Pullman Hall. With 
the exception of those represented in Pullman Hall, it con- 
tains members of the principal groups of mammals of the 
world, arranged so far as practicable, according to their rela- 
tionships. Beginning with the lower forms, the monotremes 
or egg-laying mammals of Australia and the pouched mam- 
mals or marsupials, it shows successively various groups, as 
the horse family, the tapirs, sea-cows, rodents, cat family, 
dog family, and terminates with the highest mammals, the 
monkeys and man-like apes. 
In the northwest corner of the hall is a large habitat 
group of American beavers. 
Hall 16: American Mammals-Habitat Groups. — Hall 16, 
next on the south from Hall 15, contains ten habitat groups 
of North American large mammals. From east to west, 
these are as follows: Virginia Deer, showing the difference 
in their appearance and habits, in the four seasons, Stone’s 
Mountain Sheep, Polar Bear, Musk Ox, Prongbuck, Sonora 
Grizzly Bear, American Bison. 
Hall 17: Osteology- Skeletons. — Contains skeletons of the 
principal vertebrates or backboned animals. These include 
fishes, frogs and their relatives, birds, and mammals. At 
the right of the east entrance are the lower forms, fishes, 
etc., and at the left are the higher apes and man. In the 
center toward the west end is the huge skeleton of a right 
whale. 
Hall 18: Fishes, Reptiles, Marine Fauna. — The east half 
of this hall is devoted to fishes and the west half to am- 
phibians, reptiles, and marine invertebrates. 
The fishes are arranged in two series; one showing rep- 
resentatives of the principal orders and families of fishes, 
and another showing habitat groups and special collections 
of Atlantic and Pacific food and game fishes, and also Chi- 
cago market fishes. 
The collection of reptiles includes representatives of the 
lizards, snakes, turtles, and crocodiles. A special exhibit in 
the center of the hall contains North American amphibians 
and reptiles reproduced in celluloid. 
The invertebrates include many of the myriad forms of 
life found in the sea — corals, crinoids, sponges, sea urchins, 
star fishes, crustaceans, and many others. 
Hall 19 : Shells — Insects. — A very large collection of land 
and marine shells is housed here. Some 30,000 specimens 
are shown in such a manner as to indicate their relationships. 
At the western end of the hall are several cases of insects. 
One contains poisonous insects, like tarantulas, centipedes, 
scorpions and their allies; another contains specimens and 
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