Page:Popular Science Monthly Volume 8.djvu/257

Rh Complete Arithmetic" is designed to fill the place usually occupied by three or more graded text-books. "Algebraic Problems" is intended for the use of teachers. It contains a great variety of problems, by means of which the student's knowledge of the principles of algebra may be tested.

numbers of this series cost but a trifle each, and when completed they will make a volume, not only of fascinating interest, but full of valuable practical information. Of the parts before us, VI. is on the "Population of an Apple-Tree," VII. on "Insects of the Field," and VIII. on "Insects of the Forest." The illustrations are numerous and well executed, and the descriptions are admirably clear.

have here a comprehensive account of the usually accepted methods of extracting the useful metals from their ores. The scientific principles involved in each process are clearly set forth, and the processes themselves described with considerable detail, though the author does not descend to the ultimate technical minutiae. The metals treated of in this volume are copper, lead, zinc, mercury, silver, gold, nickel, cobalt, aluminium. The subject of assaying, although it forms an important branch of metallurgy, is not touched upon, as being too large for the compass of the work. Numerous excellent woodcuts serve to illustrate the text.

book is made up of six unconnected essays, the first, "Nature and her Lessons," being an exposition of current scientific theories of the origin of the universe, and the history of the earth's changes. The author's style is very attractive, and doubtless this essay will tend to suggest many a novel line of thought to the reader previously unacquainted with the current of modern scientific research and speculation. The other subjects treated are: "Woman and her Sphere;" "Education and its Errors;" "America and her Future;" "Life and its Aspirations." The final chapter contains an address delivered by the author on the occasion of the dedication of a "Mission Monument" apparently on the grounds attached to Williams College.

The Border-Lands of Insanity. By A. Wynter, M. D. New York: Putnams. Pp. 321. Price, $2.00.

Weights, Measures, and Money, of All Nations. By F. W. Clarke, S. B. New York: Appletons. Pp. 117. Price, $1.50.

The Mechanic's Friend. By W. E. A. Axon. New York: Van Nostrand. Pp. 348. Price, $1.50.

Report on United States Marine Hospital Service. Pp. 260.

Health Fragments. By G. H. Everett, M. D. New York: Somerby. Pp. 312. Price, $2.00.

Soul Problems. By Joseph E. Peck. New York: Somerby. Pp. 63. Price, 70 cents.

Elements of Meteorology. Part II. By John H. Tice. St. Louis: the Author. Pp. 216. Price, $2.50.

Politics as a Science. By Charles Reemelin. Cincinnati: Clarke & Co. Pp. 186.

The Taxidermist's Manual. By Captain Thomas Brown. New York: Putnams. Pp. 163. Price, $1.25.

Daily Bulletin of the United States Signal Service. 4 vols.

The Mechanical Engineer. An Address by R. H. Thurston. New York: Van Nostrand. Pp. 24.

Water and Water Supply. By W. H. Corfield. New York: Van Nostrand. Pp. 145. Price, 50 cents.

Course to be pursued with an Eye lost through Accident. By J. J. Chisolm, M. D. Pp. 8.