Report of the American Museum of Natural History (Museum in New York Park). 30 pp. 8vo, 1870.

Report of the Bureau of Statistics of Labor. Aug., 1869, March, 1870, Boston. Report on Education, by John W. Hoyt, U. S. Commissioner to the Paris Universal Exposition. 1870. Government Printing Office, Washington.

Report on Clothing and Woven Fabrics; being Classes twenty-seven to thirtynine of group four; by Paran Stevens, U. S. Commissioner. 86 pp., 8vo. Roasting of Gold and Silver Ores, and Extraction of their respective Metals without Quicksilver; by G. Kustel. 154 pp. 12mo. San Francisco, 1870. Dewey & Co.

Robinson, J. R. Explosion of Steam Boilers. Little, Brown & Co.

Share, Dr. J. The Differential Calculus. Bradley, Dayton & Co.

Storer, Frank H. Cyclopædia of Quantitative Analysis. Sever & Francis, Cambridge, 1870.

Tables for the Determination of Minerals; by Thomas Egleston, Jr., Prof. Min.
and Met. in the School of Mines, Columbia Coll. 26 pp. 8vo. N. Y., 1870.
Text-book of Elementary Chemistry, Theoretical and Inorganic. Prof. George F.
Barker, New Haven, Conn., 1870.

The Andes and the Amazon; or, Across the Continent of South America. Prof
James Orton. 356 pp. 12mo. N. Y., 1870. Harper & Bro.

Transactions of the Conn. Academy of Arts and Sciences. Vol. II., Part I. New
Haven, 1870.

Trowbridge, J. Annual of Scientific Discovery for 1870. Gould & Lincoln
Upton, Maj. Gen. E. Tactics for Non-Military Bodies. D. Appleton & Co.
Waring, G. E., Jr. Earth Closets and Earth Sewage. N. Y. Tribune Office.