The first stage in the controversy, and the stage most immediately pressing, was to shew that the Bible was misleading and inaccurate as a record of scientific fact, and that therefore it could not be brought forward as evidence against scientific doctrines supported by scientific evidence. The vital matter in this was the account given in Genesis of the origin of the world. If that disappeared then the whole ground was gained; science would be left free in its own sphere. In a lecture on Evolution, delivered in 1876, Huxley began by discussing the possibilities as to the past history of nature. He believed that there were only three hypotheses which had been entertained or which well could be entertained respecting this history. The first was to assume that phenomena of nature similar to those exhibited by the world at present had always existed; in fact that the universe had existed from all eternity in what might be termed, broadly, its present condition. The second hypothesis was that the present condition of things had had only a limited duration, and that, at some period of the past, what we now know came into existence without any relation of natural causation to an antecedent state. The third hypothesis also assumed that the present condition of things had had a limited duration, but it supposed that that condition had been derived by natural processes from an antecedent condition, the hypothesis attempting to set no limits to the series of changes. In a certain sense, the first hypothesis recalls the doctrine of uniformitarianism, which Hutton and Lyell had shaped from a rational interpretation of the present conditions of nature. But, although it is no longer necessary to imagine the past history of the earth as a series of gigantic catastrophes, yet the whole record of science is against the supposition that anything like the existing state of nature has had an eternal duration. The record of fossils shews that the living population of the earth has been entirely different at different epochs. Geological history shews that, whether these changes have come about by swift catastrophes, or by slow, enduring movements, the surface of the globe, its distribution into land and water, the character of these areas and the conditions of climate to which they have been subjected have passed through changes on a colossal scale. Moreover, if we look from this earth to the universe of stars and suns and planets, we see everywhere evidence of unceasing change. If we use scientific observation and reason, if we employ on the problem the only means we possess for attempting its solution, we cannot accept the hypothesis that the present condition of nature has been eternal.