Chemistry, 213; A Hundred Years of, F. W. CLARKE, 59. Chewing Gum Habit, Antiquity of, ROBERT E. C. STEARNS, 549. City, The Most Expensive in the World, BIRD S. COLER, 16. CLARKE, F. W., A Hundred Years of Chemistry, 59. Cold Spring Harbor Biological Laboratory, 556. COLER, BIRD S., The Most Expensive City in the World, 16. COLLIER, JAMES, Colonies and the Mother Country, 139, 248, 390. Colonies and the Mother Country, JAMES COLLIER, 139, 248, 390. Color, Red, CHARLES E. DANA, 661. Congresses of the Paris Exposition, 537. Conway, Sir Martin, on the Bolivian Andes, 439. Coral Islands, Agassiz’s Investigations on, 103. Crazes, Psychology of, G. T. W. PATRICK, 285. Cytology, 330. DANA, CHAS. E., The Color Red, 661. DARWIN, CHARLES, A Biographical Sketch of an Infant, 197. Davenport’s Elementary Zoölogy, 440. DAVIS, W. M., The Physical Geography of the Lands, 157. Deaths, 108, 222, 335, 667. Degeneration in Blind Fishes, Causes of, CARL H. EIGENMANN, 397. Dugmore on Bird Homes, 441. Earth’s Developments, Some Phases of, in the Light of Recent Chemical Research, EDWARD RENOUF, 295. Eclipse, 224, 560; Total, of the Sun, FRANK BIGELOW, 1; Solar of May 28, 1900, S. P. LANGLEY, 302. Education, 331; Technical, in the Massachusetts Institute of Technology, G. F. SWAIN, 257; in the United States, 331; Higher, for Colored Youth, ANDREW F. HILYER, 436. Educational, and Scientific Institutions of New York City, 333; Association, the National, 447. EIGENMANN, CARL H., The Structure of Blind Fishes, 48; Causes of Degeneration in Blind Fishes, 397. ELIOT, C. W., Legislation against Medical Discovery, 436. Elliott and Ferguson’s Qualitative Analysis, 213. Ellis on the Analysis of White Paints, 213. ELLIS, HAVELOCK, Psychology of Red, 365, 517. Endowment of American Universities, 333. Energy, Mental, EDWARD ATKINSON, 632. Engine, The Human Body as an, E. B. ROSA, 491. Eskimo, Central, Religious Beliefs of the, FRANZ BOAS, 624. Ewart’s Penycuik Experiments, 126. Expenditure of the Working Classes, HENRY HIGGS, 527. Farm Homes for City Children, 106. Fauna, Cave, of North America, 446. Fayerweather Bequest, 558. Fertilization, Chemical, 223. Fiction and Science, 324, 336. Fishes, Blind, Structure of, CARL H. EIGENMANN, 48; Causes of Degeneration in, CARL H. EIGENMANN, 397. Flournoy’s Des Indes à la Planète Mars, 662. Flying Machines, Birds as, FREDERIC A. LUCAS, 473. French Association for the Advancement of Science, 664. Gas and Gas Meters, HUBERT S. WYNKOOP, 179. Gasoline Automobiles, WILLIAM J. BAXTER, JR., 593. Geography, 439; Physical, of the Lands, W. M. DAVIS, 157. Geologic Time, Rhythms and, G. K. GILBERT, 339. Geology, 439; International Congress of, 666. German Association for the Advancement of Science, 664.