Then in the physiology of these children of men, with their expanding brains, their great sensitive hands and diminishing bodies, great changes were necessarily worked. "We see now," says the Professor, "in the more intellectual sections of humanity an increasing sensitiveness to stimulants, a growing inability to grapple with such a matter as alcohol, for instance. No longer can men drink a bottleful of port; some cannot drink tea; it is too exciting for their highly-wrought nervous systems. The process will go on, and the Sir Wilfrid Lawson of some near generation may find it his duty and pleasure to make the silvery spray of his wisdom tintinnabulate against the tea-tray. These facts lead naturally to the comprehension of others. Fresh raw meat was once a dish for a king. Now refined persons scarcely touch meat unless it is cunningly disguised. Again, consider the case of turnips; the raw root is now a thing almost uneatable, but once upon a time a turnip must have been a rare and fortunate find, to be torn up with delirious eagerness and devoured in ecstasy. The time will come when the change will affect all the other fruits of the earth. Even now, only the young of mankind eat apples raw--the young always preserving ancestral characteristics after their disappearance in the adult. Some day even boys will regard apples without emotion. The boy of the future, one must believe, will gaze on an apple with the same unspeculative languor with which he now regards a flint"--in the absence of a cat. "Furthermore, fresh chemical discoveries came into action as modifying influences upon men. In the prehistoric period even, man's mouth had ceased to be an instrument for grasping food; it is still growing continually less prehensile, his front teeth are smaller, his lips thinner and less muscular; he has a new organ, a mandible not of irreparable tissue, but of bone and steel--a knife and fork. There is no reason why things should stop at partial artificial division thus afforded; there is every reason, on the contrary, to believe my statement that some cunning exterior mechanism will presently masticate and insalivate his dinner, relieve his diminishing salivary glands and teeth, and at last altogether abolish them."