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Schimmel & Co., Leipsic and New York. Semi-annual Report (Essential Oils, etc.). April, 1899. Pp. 68.

Smith, D. T. Philosophy of Memory, and other Essays. Louisville, Ky.: John P. Morton & Co. Pp. 203.

Smithsonian Institution. Crookes, William. Diamonds. Pp. 16.—Nutting, J. C. Hydroida from Alaska and Puget Sound. Pp. 12, with plates.

Todd, David P. Stars and Telescopes. A Handy Book of Astronomy. Boston: Little, Brown & Co. Pp. 419. $2.

Wetterstrand, Otto Georg. Hypnotism and its Application to Practical Medicine. Authorized Translation. By Henrik G. Petersen. New York: G. P. Putnam's Sons. Pp. 166.

Wilkensen, H. E., Acting Secretary, and French, H. A., Acting Secretary. An Earnest Word to Our Friends. Portland, Oregon. (Home Making there.)

Woodhull, John F., and Van Arsdale, M. B. Chemical Experiments. New York: Henry Holt & Co. Pp. 136.


Fragments of Science.