Bibliographical Notices. 2 1 5 vocal situations do really indicate the lines of ancient beaches. On the north or highest of the two points of Williamlaw, and near the summit, are two broad indistinct terraces, whose surfaces slope considerably towards the southern or lowest point, and also to the west. The crest between the two points is a succession of low eminences and intermediate furrows, which have no connexion with any of the terraces, but are formed of the basset edges of the harder beds. As the dip and strike of these correspond in the main with those of the slanting ridges below, and as they are separated by similar smooth grassy hollows, there can be no doubt but the cause assigned by Mr. Kemp for the latter, is the true one. At the south foot of Williamlaw, on the opposite bank of the Gala, is a broad level grassy plain, formed of diluvium at the time the whole valley was under water, and subsequently cut through by the existing stream. It reminded me strongly of the true terraces near the head of Glen Roy. Having now stated, as clearly as I can, the observations that occurred to me on a hasty view of these terraces, I have only to express a hope that more competent geologists may be in-duced to examine them in greater detail. Whether the theory proposed by Mr. Kemp be the true one or not, the merit of having first discovered, and then worked them out with such ability and perseverance, will ever be his own. No one will rejoice more than myself to see my objections answered, and a cause assigned that shall explain the difficulties and harmo-nize with all existing appearances. Nor is this all ; the com-plete explanation of any set of natural phaenomena, lessens the difficulty of comprehending others, still obscure, to which they are allied ; and is another step in advance towards the future solution of the grand problem, the aggregate causes that have produced the existing state of things upon our globe. J. E. Bowman. Manchester, October 10, 1840. BIBLIOGRAPHICAL NOTICES. The Flora of Yorkshire. By Henry Baines, Sub-curator to the York-shire Philosophical Society. 8vo. pp. 160. London, Longman and Co. ; Leyland and Son, Halifax. We have here a very interesting work — the Flora of an important district, carefully investigated by an industrious and intelligent prac-tical botanist, who has been enabled, by peculiar circumstances, to combine with his own the valuable labours of others to a very unusual extent. A preliminary essay, by Professor Phillips, on the Physical Geography of Yorkshire, in relation to the distribution of
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