Flinty Slate, Chlorite Slate, and Hornblende Slate Limestone, Primitive and Secondary Rocks explained Serpentine and Verd Antique Gypsum, Chalk, Basalt, Augite, and Olivine Objections from the Temperature of the Sea; the paucity of 83 Formation of Ravines, Valleys, and River-Courses. Dr. Hutton's Account of the Wearing-down of Rocks Channels of Rivers formed Formation of the Delta of Egypt The Mississippi and the Hohano Effects of Alpine Torrents 95 Cheese-Wring, or Logan Stone Effects of Frost on Rocks Ruins of Mountains Pebbles at Bello Mill 124 . 125 128 tinued superintendence of that intelligence, maintaining that the system of the universe is carried on by the force of the laws originally impressed on matter, without the necessity of fresh interference or continued supervision on the part of the Creator. Such an opinion is, indeed, founded only on a verbal fallacy; for 'laws impressed on matter,' is an expression which can only denote the continued exertion of the will of the lawgiver, the prime agent, the first mover: still, however, the opinion has been entertained, and perhaps it nowhere meets with a more direct and palpable refutation than is afforded by the subserviency of the present structure of the earth's surface to final causes; for that structure is evidently the result of many and violent convulsions subsequent to its original formation. When, therefore, we perceive that the secondary causes producing these convulsions have operated at successive periods, not blindly and at random, but with a direction to beneficial ends, we see at once the proofs of an overruling intelligence continuing to superintend, direct, modify, and control the operations of the agents, which he originally ordained. "The consideration, also, of the evidences afforded by Geological phoenomena may enable us to lay more securely the very foundations of Natural Theology, inasmuch as they clearly point out to us a period antecedent to the habitable |