, to which food the common cattle and horses are then driven; so that at these times the Niatas perish, if not fed by their owners.

Before coming to Mr. Mivart's objections, it may be well to explain once again how natural selection will act in all ordinary cases.

Man has modified some of his animals, without necessarily having attended to special points of structure, by simply preserving and breeding from the fleetest individuals, as with the race-horse and greyhound, or as with the game-cock, by breeding from the victorious birds.

So under nature with the nascent giraffe, the individuals which were the highest browsers and were able during dearths to reach even an inch or two above the others, will often have been preserved; for they will have roamed over the whole country in search of food.