of its wings, glides up again almost to its original altitude. Even a Londoner who has watched the birds in the aviary in Regent's Park knows that.
But the bird is practising this art from the moment it leaves its nest. It has not only the perfect apparatus, but the perfect instinct to use it. A man off his feet has the poorest skill in balancing. Even the simple trick of the bicycle costs him some hours of labour. The instantaneous adjustments of the wings, the quick response to a passing breeze, the swift recovery of equilibrium, the giddy, eddying movements that require such absolute precision—all that he must learn, learn with infinite labour and infinite danger, if ever he is to conquer flying. The flying-machine that will start off some fine day, driven by neat "little levers," with a nice open deck like a liner, and all loaded up with bombshells and guns, is the easy dreaming of a literary man. In lives and in treasure the cost of the conquest of the empire of the air may even exceed all that has been spent in man's great conquest of the sea. Certainly it will be costlier than the greatest war that has ever devastated the world.
No one knew these things better than these two practical men. And they knew they were in the front rank of the coming army. Yet there is hope even in a forlorn hope. Men are killed outright in the reserves sometimes, while others who have been left for dead in the thickest corner crawl out and survive.
"If we miss these meadows"—said Woodhouse presently in his slow way.
"My dear chap," said Monson, whose spirits had
