A horse will follow its mate (nearly all horses have their chums) many miles merely by sense of smell, as my long experience of them has amply proved to me.

On one occasion I for some reason displaced the near horse of my driving team and hitched up another.

After driving a distance of fifteen miles and returning homewards on the same road, soon in the distance could be seen said near horse busy with nose on the ground picking up the trail, and so absorbed in it that even when we got up quite close he did not notice us.

When he did recognize his chum and companion his evident satisfaction was affecting..