Barbadoes, an island of the West Indies, is about twelve miles in length from north to south, and consists of coral reefs, capped in one district by tertiary sandstones and limestones, which attain a height of 1200 feet above the sea. Over the rest of the island, coral reefs form the entire surface, which is divided by vertical walls of coral, some of them nearly 200 feet high, into six terraces, indicating as many periods of upheaval. In the lowest reef, Indian hatchets have been found twenty feet above high water mark; shewing that the last movement, at least, took place within the human period. The tertiary strata are more or less inclined, and in many places vertical, and contorted. Strata of marl, several hundred feet thick, predominate; and there are beds of bituminous coal, sandstone, clays, and ferruginous sands. Arenaceous limestone containing teeth of sharks, spines of echini, and shells, forms the summit of a hill nearly 1,000 feet high. The white marls abound in 300 species of the most beautiful siliceous infusoria; many are peculiar, others the same as occur in the Richmond earth, and some belong to recent species.[AY] [AY] Sir R. H. Schomburgk: Brit. Assoc. 1847. THE END. * * * * * WORKS BY THE SAME AUTHOR. _In 2 Vols, foolscap 8vo, cloth, lettered, with numerous Illustrations and Coloured Plates, price 18s. the Sixth Edition of_ THE WONDERS OF GEOLOGY; OR, A FAMILIAR EXPOSITION OF GEOLOGICAL PHENOMENA. By GIDEON ALGERNON MANTELL, Esq., LL.D., F.R.S, Vice-President of the Geological Society of London. "Dr. Mantell's _Wonders of Geology_ will continue to be a favourite work equally in the Geological schools, in the private study, and in the family circle. It may be read and understood by any intelligent and educated individual; its exact science, sound logic, and dignity of style ensure its acceptance with the learned; its elegance, beauty, and perspicuity, with the polite and refined; and its comprehensive brevity, with the student of the elements of Geology. It realizes, indeed, our beau-ideal of a familiar yet dignified philosophical style: being alike condensed and luminous, possessing a graceful flowing eloquence, and rising as the subject may require, into the sublime as well as the beautiful. We are not aware of the existence of any work, on any department of science, which has higher claims at once to a place in the library of the philosopher, and on the table of a refined family."--_Review of the American Edition of the Wonders of Geology._ _American Journal of Science._ "Dr. Mantell's eloquent and delightful work, the Wonders of Geology."--_Sir E. B. Lytton._