Korscheldt, Dr. E., and Helder, Dr. K. Text-Book of the Embryology of the Invertebrates. Translated by Matilda Bernard, and edited, with Additional Notes, by Martin F. Woodward. Vol. II. Pp. 369. Vol. III. Pp. 441. $3.25.
Lake Mohonk Conference on International Arbitration. Report of the Fifth Annual Meeting, 1889. Pp. 142.
Lo Blanco, Dr. Salvatore. The Methods employed at the Naples Zoölogical Station for the Preservation of Marine Animals. Translated by E. O. Hovey. United States National Museum. Pp. 42.
Newman, George. Bacteria, especially as they are related to the Economy of Nature, to Industrial Processes, and to the Public Health. New York: G. P. Putnam's Sons. Pp. 348.
Newton, Alfred, Gadow, Hans, and others. A Dictionary of Birds. New York: The Macmillan Company. Pp. 1088. $5.
Ohio Agricultural Experiment Station. Press Bulletin No. 199. Plums. A Comparison of Varieties. Pp. 2.
Oliver, Charles A. Description of an Adjustable Bracket for the Reid Ophthalmometer. Pp. 3; A Case of Foreign Body in the Optic Nerve. Pp. 3; A Case of Reflex Irritation. Pp. 5; A Case of Fibroma of the Eyelid. P. 1, with plate; A New Method for the Plantation of Glass Balls into the Optical Cavity. Pp. 30.
Putnam, F. W. Address as Retiring President of the American Association for the Advancement of Science, Columbus Meeting, 1899. Pp. 17.
Ribot, Th. The Evolution of General Ideas. Chicago: The Open Court Publishing Company. Pp. 231. $1.25.