116 POPULAR OFFICIAL GUIDE. ' 
The Puma, (Felis concolor), is described in the section 
relating to the Lion House, where other Pumas are exhib- 
ited (page 78). 
Of the Lynxes, we have two well-defined species, and 
one subspecies. The Canada Lynx, (Lynx canadensis), is 
well represented in the southern compartment of the Puma 
House, where a fine adult pair has become acclimatized. 
This is the Loup Cervier of the French Canadians, and it is 
truly the Lynx of Canada and the subarctic North. It has 
no spots on its body, and its pelage is a cold pepper-and- 
salt gray color. Its feet are large and heavily furred, and 
it has a long, black hair-pencil on the tip of each ear. A 
large specimen stands 18 inches high, and weighs 22 pounds. 
The food of the American Lynxes generally consists of hares 
and rabbits, ground birds of all kinds, and anything else 
that can be caught and killed, except porcupine. To man 
they are not ‘‘dangerous animals.’’ 
THE BURROWING MAMMALS, AND OTHERS, No. 42. 
North America is wonderfully rich in species of gnawing 
animals, and the end is not yet. The investigations of our 
mammalogists are adding new species with a degree of 
rapidity and parallelism that is fairly bewildering. 
It is the duty of the Zoological Society to do its utmost 
to increase as much as possible the sum total of knowledge 
of our largest Order of Mammals. Manifestly, however, it 
is impracticable to do more than place before visitors a rea- 
sonable number of well-chosen types, which shall represent 
as many as possible of the twelve Families, and also the 
genera most worth knowing. 
The most serious obstacle in the way of anyone who at- 
tempts to exhibit collections of living rodents lies in the 
natural propensity of so many species to keep out of sight 
during the daytime. This is particularly true of the mem- 
bers of the Mouse, Pocket Gopher, and Pouched Rat Fami- 
lies, comprising about three hundred species in all. With 
very few exceptions, the whole matter of the exhibition 
of collections of living rodents is something new, and every 
step is an experiment. In the belief that even the most shy 
burrowing animals will appreciate abundant room, perfectly 
natural surroundings, plenty of food, and immunity from 
annoyance, and eventually fall into the habit of spending 
many of the daylight hours above ground, as do prairie- 
