The separation of Australia by wide seas from Europe, Asia, Africa, and America, gives it animals and plants peculiarly its own.

It has been said that of 5,710 plants discovered, 5,440 are peculiar to that continent.

The kangaroo also is proper to Australia, and there are other animals of like kind.

Of 58 species of quadruped found in Australia, 46 were peculiar to it.

Sheep and cattle that abound there now were introduced from Europe.