Cause and Effects : or, the Globe we Inhabit. By
R. Markley Browne, F.G.S. (L. Reeve and Co.)—For the sake of his theory Mr. Mackley Browne would have done well to write more briefly, and to cultivate a better arrangement. However, his book is interesting, and there seems good reason for endorsing some of his arguments. So far as we catch the drift of them, their object is to show that the British Isles were for a long time under water, and that those peculiar features of the present crust which some writers attribute to volcanic agency were really pro- duced by water. This is chiefly shown by reference to boulders and to the geology of the Wealds, but Mr. Mackley Browne also traces the Thames from its mouth to its source with a similar view, talking of the time when a much larger stream flowed past Richmond Hill and the other high grounds bordering the present river. All this is put in a readable way, but we are somewhat tempted to overlook the controver- sial ground on whioh Mr. Mackley Browne is treading. We think him a guide when he is a disputant.
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