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But though Kidd knew a great deal about Sir Claude a great deal more, in fact, than there was to know it would never have crossed his wildest dreams to connect so showy an aristocrat with the newly-unearthed founder of Catastrophism, or to guess that Sir Claude Champion and John Boulnois could be intimate friends. Such, according to Dalroy's account, was nevertheless the fact.

I find three, more or less contradictory, systems of geological thought, each of which might fairly enough claim these appellations, standing side by side in Britain. I shall call one of them CATASTROPHISM, another UNIFORMITARIANISM, the third EVOLUTIONISM; and I shall try briefly to sketch the characters of each, that you may say whether the classification is, or is not, exhaustive.

But it is proper to remark that each of the latter has kept alive the tradition of precious truths. CATASTROPHISM has insisted upon the existence of a practically unlimited bank of force, on which the theorist might draw; and it has cherished the idea of the development of the earth from a state in which its form, and the forces which it exerted, were very different from those we now know.

I have said that the three schools of geological speculation which I have termed Catastrophism, Uniformitarianism, and Evolutionism, are commonly supposed to be antagonistic to one another; and I presume it will have become obvious that in my belief, the last is destined to swallow up the other two.

I find three, more or less contradictory, systems of geological thought, each of which might fairly enough claim these appellations, standing side by side in Britain. I shall call one of them CATASTROPHISM, another UNIFORMITARIANISM, the third EVOLUTIONISM; and I shall try briefly to sketch the characters of each, that you may say whether the classification is, or is not, exhaustive.

By CATASTROPHISM, I mean any form of geological speculation which, in order to account for the phænomena of geology, supposes the operation of forces different in their nature, or immeasurably different in power, from those which we at present see in action in the universe. The Mosaic cosmogony is, in this sense, catastrophic, because it assumes the operation of extra-natural power.

No one can doubt that the influence of uniformitarian views has been enormous, and, in the main, most beneficial and favourable to the progress of sound geology. Nor can it be questioned that Uniformitarianism has even a stronger title than Catastrophism to call itself the geological speculation of Britain, or, if you will, British popular geology.

"Sir Claude Champion's place haven't you come down for that, too?" asked the other pressman, looking up. "You're a journalist, aren't you?" "I have come to see Mr Boulnois," said Kidd. "I've come to see Mrs Boulnois," replied the other. "But I shan't catch her at home." And he laughed rather unpleasantly. "Are you interested in Catastrophism?" asked the wondering Yankee.

There was a time when catastrophism might, pre-eminently, have claimed the title of "British popular geology"; and assuredly it has yet many adherents, and reckons among its supporters some of the most honoured members of this Society. By UNIFORMITARIANISM, I mean especially, the teaching of Hutton and of Lyell.

It has kept before our eyes the power of the infinitely little, time being granted, and has compelled us to exhaust known causes, before flying to the unknown. To my mind there appears to be no sort of necessary theoretical antagonism between Catastrophism and Uniformitarianism. On the contrary, it is very conceivable that catastrophes may be part and parcel of uniformity.