VII. 
THE TERTIARY AGE, AND ITS CHAR 
ACTERISTIC ANIMALS. 
I N entering upon the Tertiaries, we reach that 
geological age which, next to his own, has 
the deepest interest for man. The more striking 
scenes of animal life, hitherto confined chiefly to 
the ocean, are now on land ; the extensive sheets 
of fresh water are filled with fishes of a compar- 
atively modern character, — with Whitefish, Pick- 
erel, Perch, Eels, etc., — while the larger quad- 
rupeds are introduced upon the continents so 
gradually prepared to receive them. The con- 
nection of events throughout the Tertiaries, con- 
sidered as leading up to the coming of man, may 
be traced not only in the physical condition of the 
earth, and in the presence of the large terrestrial 
Mammalia, but also in the appearance of those 
groups of animals and plants which we naturally 
associate with the domestic and social existence 
of man. Cattle and Horses are first found in the 
middle Tertiaries ; the grains, the Rosaceae, with 
their variety of fruits, the tropical fruit-trees, 
