BOOKS RECEIVED. 
CHESTER, ALBERT H. — Catalogue of Minerals. New York, Wiley, 1897. 
CONSTANTIN, J. — Les végétaux et les milieux cosmiques (Adaption — Evolution). 
Paris, Alcan, 1898. 
FRAIPONT, JULIEN. — Les cavernes et leur habitants. Paris, Bailliére, 1896. 
GAUPP, OTTO. — Herbert Spencer. Stuttgart, Frommanns, 1897. 
MACH, Ernst. — Contributions to the Analysis of the Sensations. Trans. by 
C. M. Williams. cee Open Court Pub. Co., 1897. 
SCUDDER, SAMUEL HUBBARD. — Revision of the ee reed Bree 
taceiitidan) W ETR of U. S. Nat. Mus. Vol. xx, pp. 1- 
Washington, 1897. ° 
SHUFELDT, R. W.—Chapters on the Natural History of the United States. 
New York, Studer, 1897. $3.50. 
VAN BIERVLIET, J. J. — Éléments de Psychologie Humaine. Paris, Alcan, 1895. 
WEIR, JAMES.— Psychological Correlation of Religious Emotion and Sexual 
Desire. 2d edition. Louisville, Ky., Courier Journal, 1897. 
