It will be well worth while to close this present series of illustrations by a review of Professor Huxley's last published and best considered positions on Teleology. He printed, in 1871, an article on Haeckel's "Natürliche Schöpfungs Geschichte," and has now entitled it "The Genealogy of Animals," and included it in his recent volume of Critiques. We may therefore assume that we here find the distinguished Biologist's deliberate opinions. He says, p. 305, "The Teleology which supposes that the eye, such as we see it in man or one of the higher _Vertebrata_,[82] was made with the precise structure which it exhibits, for the purpose of enabling the animal which possesses it to see, has undoubtedly received its death-blow. Nevertheless it is necessary to remember that there is a wider Teleology, which is not touched by the doctrine of Evolution, but is actually based upon the fundamental proposition of Evolution. That proposition is, that the whole world, living and not living, is the result of the mutual interaction, according to definite laws, of the forces possessed by the molecules of which the primitive nebulosity of the universe was composed. If this be true, it is no less certain that the existing world lay, potentially, in the cosmic vapour; and that a sufficient intelligence could, from a knowledge of the properties of the molecules of that vapour, have predicted, say the state of the Fauna of Britain in 1869, with as much certainty as one can say what will happen to the vapour of the breath on a cold winter's day. "Consider a kitchen clock, which ticks loudly, shows the hours, minutes, and seconds, strikes, cries 'cuckoo!' and perhaps shows the phases of the moon. When the clock is wound up, all the phenomena which it exhibits are potentially contained in its mechanism, and a clever clockmaker could predict all it will do after an examination of its structure. "If the evolution theory is correct, the molecular structure of the cosmic gas stands in the same relation to the phenomena of the world as the structure of the clock to its phenomena."