ebullitions from beneath stuck fast to them, and dragged them down. Then came the formation of the Oolite, rolled into little egg-like pellets by the waves; and last of all, the Green sand and Chalk; after which the waters ran off, and sank into the deep hollow which now forms the bed of the ocean, but which previous to the cataclysm had been the place of the land. The dean, as he went on, fell into some little confusion regarding the true place of some of his animals, such as the megatherium, which arrived in his arrangement a little too soon. He spoke, too--if a newspaper report is to be credited--of a heavy creature soon overtaken and drowned by the rising waters, which he termed the _pterogactylus_, and which does not seem to have turned up, either in the body or out of it, since it was lost on that memorable occasion. Nor did he make any provision in his arrangement for the formation of the various Tertiary deposits. But then all these are slight matters, that could be very easily woven into his hypothesis. As the flood rose along the hill sides, first such of the weightier animals would perish as could not readily climb steep acclivities; and then the oxen, the horses, the deer, and the goats, with the lighter carnivora, who, as they would die last,--some of them not until the final disappearance of the hill-tops,--would of course be entombed in the upper deposits. Such is the hypothesis of the Dean of York,--a hypothesis of which it may be justly affirmed, that it is well nigh as ingenious as the circumstances of the case permit, and against which little else can be urged than that it must seem rather cumbrous and fanciful to the class who do not know geology, and, on the whole, somewhat inadequate to the class who do.