Clayton, The, Air Compressors. Clayton Air-Compressor Works. New York. Pp. 70.
Coulter, John M. Plant Relations. A First Book of Botany. New York: D. Appleton and Company. Pp. 264. $1.10.
Crook, James K. The Mineral Waters of the United States and their Therapeutic Uses. New York and Philadelphia: Lea Brothers & Co. Pp. 588. $3.50.
Dalton, Captain Davis. How to Swim. New York: G. P. Putnam's Sons. Pp. 133. $1.
Gerhard, W. P. Sanitary Engineering of Buildings. Vol. I. New York: W. P. Comstock. Pp. 454. $5.—A Half Century of Sanitation, 1850-'99. Pp. 30.
Gildemeister, E., and Hoffmann, Fr. Die Aetherischen Oele. (The Etherial Oils.) Prepared in behalf of the firm of Schimmel & Co. Leipzig and Berlin: Julius Springer. Pp. 919.
Gould, the late Benjamin Apthorp. Cordoba Photographs. Photographic Observations of Star Clusters. Lynn, Mass.: the Nichols Press. Pp. 533, with 37 plates. Text in Spanish and English.
Iowa Geological Survey. Annual Report. 1898, with accompanying Papers. Samuel Calvin, State Geologist; H. F. Bain, Assistant State Geologist. Pp. 572, with maps.
Kellerman, W. A. The Fourth State Catalogue of Ohio Plants. Systematic Check-list of the Pteridophytes and Spermatophytes. Columbus, Ohio. Pp. 65. 20 cents.
Leonard, John W. Who's Who in America. A Biographical Dictionary of Living Men and Women in the United States, 1899, 1900. Chicago: A. N. Marquis & Co. Pp. 822.