A traveler was crossing mountain heights of untrodden snow alone. He struggled bravely against the sense of sleep which weighed down his eyelids, and he knew that if he fell asleep death would inevitably follow. At this crisis his foot struck against a heap lying across his path. Stooping down, he found it to be a human body half buried in the snow. The next moment he held him in his arms, and was rubbing and chafing the frozen man’s limbs. The effort to restore another unto life brought back to himself warmth and energy.

It was, in fact, the means of saving both.