Hunter, S. J. Alfalfa, Grasshoppers, Bees: Their Relationship. University of Kansas. Pp. 152. Jackman, Wilbur S. Nature Study for Grammar Grades. New York: The Macmillan Company. Pp. 407. $1. Jenks, Josephine, Translator. Friedrich Froebel's Education by Development. New York: D. Appleton and Company. International Education Series. Pp. 347. Kemp, James Furman. Preliminary Report of the Geology of Essex County, New York. Pp. 24. Geology of the Lake Placid Region. Pp. 20, with map. Marot, Helen. A Handbook of Labor Literature. Philadelphia: Free Library of Economics and Political Science. Pp. 96. $1. Mason, Otis Tufton. Aboriginal American Zoötechny. New York: G. P. Putnam's Sons. Pp. 37. New England Anti-Vivisection Society Monthly. Vol. IV, No. 4. April, 1899. Pp. 20. Boston. 10 cents. $1 a year. Pennwitt, W. C. Memorial to the United States Senate concerning a National University. Pp. 16. Peck, F. W., Commissioner General. The United States at the Paris Exposition in 1900. Pp. 11. Internationale Exposition Universelle, Paris, 1900. Regulations, Classification. Chicago. Pp. 110. Roosa, D. B. St. John, M. D. Defective Eyesight. The Principle of its Relief by Glasses. New York: The Macmillan Company. Pp. 193. $1. Russell, Frank. Explorations in the Far North. University of Iowa. Pp. 190. Sargent, Frederick Leroy. Corn Plants. Their Uses and Ways of Life. Boston and New York: Houghton, Mifflin & Co. Pp. 106. Smith, D. T., M. D. The Philosophy of Money, and other Essays. Louisville, Ky.: John P. Morton & Co. Pp. 203. $1.25. Smith, Edgar F. (authorized translator). Victor von Richter's Organic Chemistry, or Chemistry of the Carbon Compounds. Edited by Prof. R. Anschütz. Third American from the eighth German edition. Philadelphia: P. Blakiston & Co. Vol. I. The Aliphatic Series. Pp. 625. $3. Smithsonian Institution (U. S. National Museum). Cook, O. F. The Diplopod Family Striariidæ. Pp. 8, with plates. African Diplopoda of the Family Gomphodesmidæ. Pp. 64, with plates. Swift, Morrison I. Anti-Imperialism. Los Angeles, Cal.: Public Ownership Review. Pp. 64. United States Commissioner of Fish and Fisheries. Report to June 30, 1898. Washington. Pp. 350. Woodman, J. Edmund. Studies in the Gold-bearing Slates of Nova Scotia. Boston Society of Natural History. Pp. 42, with 3 plates. Fragments of Science.