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134 remarkable for its diminutive size. From an extended comparison of the brain-cavities of Tertiary mammals, Professor Marsh has found that there was a gradual increase in the higher portion of the brain during this period, and that the brain of a mammal fitted for a long survival was proportionately larger than the average. The remains of Tinoceras are found in the same lake-basin, but at a higher level, and the evidence is clear that it was a later and more specialized form, Tinoceras ingens, as he stood in the flesh, was about six and a half feet in height to the top of the back, and about twelve feet long. His weight was probably at least six thousand pounds. Dinoceras mirabile was about one fifth smaller. In an appendix Professor Marsh gives a synopsis of Dinocerata, in which all the known species of the order, about thirty, are recognized, and a bibliography follows the synopsis. With the aim of making the illustrations tell the main story to anatomists, the author has incorporated in the volume fifty-six fine, large lithographic plates, and nearly two hundred original woodcuts, representing all the more important specimens of the Dinocerata now known, and including at least one figure of every species.

this report are presented the results of a careful survey of a district with a rich fauna, through thirty thousand feet of Palæozoic strata, representing the Cambrian, Silurian, Devonian, and Carboniferous rocks. It is regarded by Mr. Arnold Hague, geologist in charge of the district survey, as "the most important contribution yet made to the invertebrate paleontology of the basin ranges, and of great value in its bearings upon the geology of the Cordilleras."

is a revised edition of the "Manual" by Benn Pitman, the first edition of which appeared in 1855. While a number of new features appear in its pages which were not in its predecessor, the plan of presenting the system is essentially the same. Such changes and additions to the system, and such only, as are of real importance have been adopted.

of questions on the properties of the elements, chemical phenomena, and manipulation, to be answered by the student through experiment or by calculation from what he knows. The answers are given in the latter part of the book.

exercises in this volume have been prepared with the twofold purpose of furnishing to the student material for translating into German, and of assisting him in the analysis and translation of the more difficult illustrations in Brandt's "German Grammar," to which he is constantly referred. A full vocabulary, notes, references, and general suggestions arc provided.

Hydrogen Peroxide. By William B. Clarke, M. D. Indianapolis, Ind. Pp. 12.

The Evolution of Revelation. By James Morris Whiten, Ph. D. New York: G. Putnam's Sons. Pp. 34. 25 cents.

Recitations and Readings. New York: J. S. Ogilvie & Co. Pp. 126. 10 cents.

Voice in Singers. By Carl H. von Klein, M. D., Dayton. Ohio. Pp. 8.

City Government. By Charles Reemelin. Cincinnati, Ohio. Pp. 15.

Canals and Railroads; Ship-Canals and Ship-Railways. Pp. 10. The Interoceanic Problem, and its Scientific Solution Pp. 40, with Six Plates. By Elmer L. Corthell.

The External Therapeutics of Pulmonary Consumption. By Thomas J. Mays, M. D. Philadelphia. Pp. 10.

Development of Crystallization; and Geology in the Washoe District. By Arnold Hague and Joseph H. P. Iddings. Washington: Government Printing-Office. Pp. 44.

A Great Trap-Dike across Southeastern Pennsylvania. By H. Carvill Lewis. Pp. 21, with Map.

Quarterly Report Bureau of Statistics. Treasury Department. Second Quarter, 1885. Washington: Government Printing-Office. Pp. 175.

Massachusetts State Agricultural Experiment Station, Amherst. August Bulletin, 1875. Pp. 12.

The Raising and Management of Poultry. Report of Discussions of Breeders and Experts. Boston: Cupples, Upham & Co. Pp. 125. 50 cents.