chase by approaching Nimrod as though he were going to stamp him into
the earth, and then suddenly leaping quickly and safely over the dog, he
would run away. At this signal for a game, if Nimrod was in the mood, he
chased the fawn, who would delight in jumping over fences and hedges and
waiting for poor Nimrod to get over or under just in time to see his
playmate leap to the other side.

Wolves, if taken when quite young, have a most unique way of showing
their affection at the appearance of their master. They will spring into
the air, tumbling over, with whinnying cries of delight, falling to the
ground they pretend to bite and snap at everything, until their friend
finally comes very near them.

Prairie dogs are fond of all kinds of races and jumping games; they will
each appear at the entrance to their underground homes, and will play a
simple form of prisoners'-base for long periods of time. With defiant
calls at each other, one finally approaches the home of the other, which
is a signal for the third to attempt to slip into the entrance to the
second one's home before he can return. Many join in the game and it
usually ends in a regular roll-and-tumble for their respective homes.

Perhaps the strangest of all forms of play is that in which young
duckbills indulge. They are slightly like puppies in their methods of
roll-and-tumble, but the way in which they grab one another with their
strange bills, as they strike with their fore-paws is quite original.
They seem to have an unusually good disposition, and if one little
playfellow falls in the game, and desires to scratch himself before
arising, the other patiently waits until he arises, when the mock battle
begins anew.

Antelopes have chase and marching games which are beautiful. They seem
rapidly to follow an invisible leader over the plains, suddenly forming
themselves into pairs, fours, eights, sixteens, until the entire herd
thus form one line, like an army of soldiers marching. While this game
is progressing, certain of their number stand as sentinels and
spectators, and the slightest approach of an enemy is the signal for all
play to cease, and for them to disappear over the plains.

When we witness these abundant evidences of the need and prevalence of
recreation in the animal world, we are confronted with one more argument
for the existence of real mental and moral faculties among our
four-footed friends.

IV

ARMOUR-BEARING AND MAIL-CLAD A