MacDougal, D. T. The Nature and Work of Plants. New York: The Macmillan Company. Pp. 218. 80 cents.

Manning, Warren H. Directions for Surveying and Arranging Home and School Grounds. Boston, Mass. Pp. 12.

Marriott, H. P. F. The Secret Societies of West Africa. London: Harrison & Sons. Pp. 4.

Martens, Adolf. Handbook of Testing Materials. Part I. Vol. II. Illustrations. New York: John Wiley & Sons. Pp. (plates and explanations) 240.

Mexico. Boletin del consejo Superior de Salubridad. (Bulletin of the Superior Sanitary Council.) Mexico, January, 1900. Pp. 32.

Roisel. Essai de Chronologie des Temps Prehistoriques. (Essay on the Chronology of Prehistoric Times.) Paris: Félix Alcan. Pp. 60. 1 franc.

Schufeldt, R. W. Notes on the Mountain Partridge in Captivity. Pp. 4, with plate.

Scientific Alliance of New York. Ninth Annual Directory. Pp. 60. 25 cents.

Siebel, J. E. Compend of Mechanical Refrigeration. Chicago: H. S. Rich & Co. Pp. 389. Price, $3.

South Kensington Museum (London). Catalogue of the Collection of Pottery and Porcelain illustrating Popular British History, Lent by Henry Willett, Esq. Pp. 123.