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the result of a series of investigations by Drs. O. Lummer and E. Pringshein, of Charlottenburg, Germany, made with the aid of a grant from the Hodgkins Fund of the Smithsonian Institution. Besides being of exceptional importance in thermodynamics, the specific heat ratio is of interest as affording a clew to the character of the molecule. In the present investigation coincident results on the gases examined appear to have been reached for the first time. (Published by the Smithsonian Institution.)

From the greater lightness of the air and the higher velocity of its currents, it is evident that the materials it may carry and deposit will be somewhat different in composition and structure from those which are laid down in water. They are as a rule finer, they exhibit a different bedding, and are more capriciously placed. Mr. Johan August Udden has made a careful study of the subject, the results of which he publishes under the title of The Mechanical Composition of Wind Deposits, as the first number of the Augustana Library Series, at the Lutheran Augustana Book Concern, Rock Island, Ill.

The History Reader for Elementary Schools (The Macmillan Company, 60 cents), prepared by L. L. W. Wilson and arranged with special reference to holidays, contains readings for each month of the school year, classified according to different periods and phases of American history generally, so chosen that some important topic of the group shall bear a relation to the month in which it is to be read. The groups concern the Indians, the Discovery of America, Thanksgiving, Other Settlements (than those of Virginia and the Pilgrims), Dr. Franklin, Lincoln and Washington, the Revolution, Arbor Day, and Brave Sea Captains, etc., closing with articles in reference to Flag Day. The insertion of an article on the War with Spain seems premature. Public sentiment is not yet at rest on the subject.


Agricultural Experiment Stations. Bulletins and Reports. Cornell University: No. 100. Hints on Rural School Grounds. By L. H. Bailey. Pp. 20; No. 161. Annual Flowers. By G. N. Lanman and L. H. Bailey. Pp. 32; No. 162. The Period of Gestation in Cows. By H. H. Wing. Pp. 120.—Delaware College: No. 43 (abridged edition). The European and Japanese Chestnuts in the United States. By G. H. Powell. Pp. 16.—Michigan: Nos. 164 and 165. Methods and Results of Tillage, and Draft of Farm Implements. By M. W. Fulton. Pp. 24; Elementary Science Bulletin, No. 5. Branches of Sugar Maple and Beech as seen in Winter. By W. J. Beal. Pp. 4; do., No. 6. Potatoes, Rutabagas, and Onions. By W. J. Beal. Pp. 6.—New Jersey: No. 133. Peach Growing in New Jersey. By A. T. Jordan. Pp. 16; No. 134. Fermentation and Germ Life. By Julius Nelson. Pp. 24.—North Dakota: No. 15. Some Chemical Problems Investigated. Pp. 28.—Ohio: Newspaper Bulletin 188. Sugar Beets and Sorghum in Ohio. Pp. 2.

Aston, W. G. A History of Japanese Literature. New York: D. Appleton and Company. Pp. 408. $1.50.

Berry, Arthur. A Short History of Astronomy. New York: Charles Scribner's Sons. Pp. 440. $1.50.

Brush and Pencil. An Illustrated Magazine of the Arts and Crafts. Monthly. Chicago: Arts and Crafts Company. Pp. 64. 25 cents. $2.50 a year.

Bulletins, Reports, etc. Colgate University, Department of Geology and Natural History: Announcement. Pp. 16.—Field Columbian Museum, Chicago: Annual Report of the Board of Directors for 1897-'98. Pp. 90, with plates.—Financial Reform Association: 1848 to 1898. Fifty Years' Retrospect. London. Pp. 54, with plates; Financial Reform Almanac for 1899. London. Pp. 316. 1 shilling.—New York State Library: Legislative Bulletin for 1898. Pp. 132. 25 cents.—New York University: Catalogue and Announcements for 1898-'99. Pp. 358.—Perkins Institution and Massachusetts School for the Blind: Sixty-seventh Annual Report of the Trustees, to August 31, 1898. Pp. 305.—United States Department of Labor: Bulletin No. 20, January, 1899. Edited by Carroll D. Wright and Oren W. Weaver. Pp. 170.

Byrd, Mary E. Laboratory Manual in Astronomy. Boston: Ginn & Co. Pp. 273.

Cajori, Florian. A History of Physics in its Elementary Branches, including the Evolution of Physical Laboratories. New York: The Macmillan Company. Pp. 323. $1.60.

Callie, J. W. S. John Smith's Reply to "Merrie England, Defense of the Liberal Programme." London: John Heywood. Pp. 88. Sixpence.

Chapman, Frank H., Editor. Bird Lore. February, 1898, Vol. I, No. 1. Bimonthly. New York: The Macmillan Company. Pp. 32. 20 cents. $1 a year.

Davenport, Charles B. Experimental Morphology. Part II. New York: The Macmillan Company. Pp. 509. $2.

Evans, A. H. Birds (The Cambridge Natural History, edited by S. F. Harmer and A. E. Shipley, Vol. IX). New York: The Macmillan Company. Pp. 635. $3.50.

Egbert, Seneca. A Manual of Hygiene and Sanitation. Philadelphia: Lea Brothers & Co. Pp. 368.

Foulke, William Dudley. Slav or Saxon: a Study of the Growth and Tendencies of Russian Civilization. New York: G. P. Putnam's Sons. Pp. 141. $1.

Huntington, Elon. The Earth's Rotation and its Interior Heat. Pp. 33.