The horse affords the best example amongst animals of perseverance: he will go on until he falls exhausted or dead. On the Yorkshire moors, after a heavy fall of snow, the roads are quite lost, and it often happens that the mailman has to unharness his horse (the cart being blocked by the snow), and trust to the horse’s courage and endurance to carry the mails from village to village. It has been known that the driver has been overcome by the intense cold, when the horse has found his way unaided to the nearest accustomed stopping place.