"The new-born kangaroo," says Professor Owen, "is an inch in length, naked, blind, with very rudimental limbs and tail; in one which I examined the morning after the birth, I could discern no act of sucking; it hung, like a germ, from the end of the long nipple, and seemed unable to draw sustenance therefrom by its own efforts. The mother accordingly is provided with a peculiar adaptation of a muscle (_cremaster_) to the mammary gland, by which she can inject the milk from the nipple into the mouth of the pendulous embryo. Were the larynx of the creature like that of the parent, the milk might, probably would, enter the windpipe and cause suffocation: but the larynx is cone-shaped, with the opening at the apex, which projects, as in the whaletribe, into the back aperture of the nostrils, where it is closely embraced by the muscles of the 'soft palate.' The air-passage is thus completely separated from the fauces (mouth), and the injected milk passes in a divided stream, on either side the base of the larynx, into the oesophagus. These correlated modifications of maternal and foetal structures, _designed_ with especial reference to the peculiar conditions of both mother and off-spring, afford, as it seems to me, irrefragable evidence of _creative forsight_. The parts of this apparatus cannot have produced one another; one part is in the mother, another part in the young one; without their harmony they could not be effective; but nothing except design can operate to make them harmonious. They are intended to work together; and we cannot resist the conviction of this intention when the facts first come before us."