Geology and Mineralogy. 465 



9. Fossils of the Bahama Islands, with a list of the non-marine 

 mollusks y by W. H. Dale. (The Bahama Islands, edited by G. 

 B. Shattuck. See 12, below.) Geogr. Soc. Baltimore, 1905, pp. 

 23-47, pis. 11-13. In this paper are described a number of new 

 species. The list of Bahama land shells, recent and fossil, has 

 171 species and varieties. Of marine fossil mollusks there are 51 

 species. The fauna of the "salt pans" has 12 species, of which 

 6 are peculiar to these lagoons. c. s. 



10. On the Relations of the Land and Fresh-water Mollusk- 

 fauna of Alaska and Eastern Siberia y by W. H. Dall. Popular 



Sci. Monthly, Feb., 1905, pp. 362-366. 



11. Geological Survey of Ohio, Edward Orton, Jr., State Geol- 

 ogist. Fourth series, Bulletin No. 3. The Manufacture of 

 Hydraulic Cements; by A. V. Bleiningee. Pp. xiv, 391. 

 Columbus, Ohio, 1904. — The author has brought together in this 

 volume a large amount of information relating to the different 

 materials suitable for Portland cement and the methods of their 

 manufacture. Much of the matter here given has not hitherto 

 been accessible in English books. Attention is given particularly 

 to the chemical side of the subject and the writer contributes 

 also the results of his own researches. 



12. The Bahama Islands. 630 pp. 93 plates. 7 figures. New 

 York, 1905. (The Macmillan Company.) — This elaborate volume 

 on The Bahama Islands is the product of an expedition of the 

 Geographical Society of Baltimore, led in 1903 by Prof. Geo. B. 

 Shattuck. Much assistance was received from several govern- 

 mental Bureaus in Washington as well as from Johns Hopkins 

 University in the way of instrumental and other outfit for the 

 expedition. The volume treats the islands in all their aspects, 

 scientific, hygienic, historic, economic ; no less- than fifteen 

 authors contribute to its pages. The presence of water-filled 

 caves to a depth of 300 feet and the discovery of recent bedded 

 deposits with abundant marine fossils at heights up to 10 or 15 

 feet above sea-level in certain islands are taken to indicate former 

 higher and lower stands of the land. Marine erosion, as well as 

 preponderating submergence, is held responsible for the great 

 diminution of a much larger former land area. The variety of 

 soils, as indicated on soil maps of several islands, is greater than 

 might be expected on a foundation of limestone alone. Pine- 

 apples are the most important agricultural product; in some 

 plantations they are grown in the little pockets weathered in the 

 limestone surface. The history of the islands, with special 

 regard to slavery, is given in detail. It was reported after the 

 Baltimore conflagration that the Geographical Society was seri- 

 ously affected by that disaster ; but the issue of this handsome 

 volume leads us to hope that the Society has only been tempo- 

 rarily affected, and that it will soon regain the vigor with which 

 its career was begun. w. m. d. 



13. La Montagne Pelee et ses Eruptions; by A. Lacroix. 

 4to. Paris, 1904 (Masson et Cie). — In this imposing and beau- 



Am. Jour. Sci.— Fourth Series, Vol. XIX, No. 114.— June, 1905. 

 32 



