But as a matter of fact Religion has taken the form of a revelation. And this introduces a new contact between Religion and Science, and of necessity a new possibility of collision. There is not only possible opposition or apparent opposition of Science in what is revealed, in what we may call the actual substance of the revelation; but also in the accessories and evidences of the revelation, which may be no actual part of the revelation itself, but nevertheless are, to all appearance, inseparably bound up with it. It is therefore no more than might have been expected that the general postulate of the uniformity of nature should appear to be contravened by the claim to supernatural power made on behalf of revelation, and that the special, but just at present leading scientific doctrine, the doctrine of Evolution, should be found inconsistent with parts, or what appear to be parts, of the revelation itself. And we have to consider the two questions, What has Revelation to say concerning Evolution? and what has Science to say concerning Miracles? Concerning Evolution, we have first to consider how much in this direction has been made fairly probable, and what still remains to be determined. It cannot then be well denied that the astronomers and geologists have made it exceedingly probable that this earth on which we live has been brought to its present condition by passing through a succession of changes from an original state of great heat and fluidity, perhaps even from a mixture mainly consisting of gases; that such a body as the planet Jupiter represents one of the stages through which it has passed, that such a body as the moon represents a stage toward which it is tending; that it has shrunk as it cooled, and as it shrank has formed the elevations which we call mountains, and the depressions which contain the seas and oceans; that it has been worn by the action of heat from within and water from without, and in consequence of this action presents the appearance when examined below the surface of successive strata or layers; that different kinds of animal and vegetable life have followed one another on the surface, and that some of their remains are found in these strata now; and that all this has taken enormous periods of time. All this is exceedingly probable, because it is the way in which, as Laplace first pointed out, under well-established scientific laws of matter, particularly the law of gravitation and the law of the radiation of heat, a great fluid mass would necessarily change. And the whole solar system may and probably did come into its present condition in this way. It certainly could have been so formed, and there is no reason for supposing that it was formed in any other way.