Gibbs, Wolcott, Portrait of, 114; Works of, 219. GILBERT, G. K., Rhythms and Geologic Time, 339. Gilbert, G. K., Portrait of, 226; Work of, 332; on Recent Earth Movements, 439. Greatness, Comparative Longevity and, JOSEPH JASTROW, 206. GREELY, A. W., Scientific Results of the Norwegian Polar Expedition, 420. GROFF, GEORGE C., The Conquest of the Tropics, 540. HADDON, A. C., Expedition to Torres Straits, 217. HAFFKINE, W. M., Preventive Inoculation, 115, 240. HIGGS, HENRY, Expenditure of the Working Classes, 527. HILYER, ANDREW F., Higher Education of Colored Youth, 436. Hollick on Geological Formations and Forests in New Jersey, 107. Homes, Farm, for City Children, 106. Howard on the Mosquitoes of the United States, 663. Huggins’s Atlas of Representative Stellar Spectra, 552. Human Body as an Engine, E. B. ROSA, 491. Humiliating Situation, 100. Hydrogen, Solidification of, 223. Importation of Animals, Legislation regarding, 560. Infant, A Biographical Sketch of an, CHARLES DARWIN, 197. Ingle’s Chemistry of Fire and Fire Prevention, 214. Inoculation, Preventive, W. M. HAFFKINE, 115, 240. Insect, Bubble-blowing, E. S. MORSE, 23. International Assembly, 220. Jackson’s Glossary of Botanical Terms, 328. JACOBY, HAROLD, The Sun’s Destination, 191. JASTROW, JOSEPH, Comparative Longevity and Greatness, 206; The Modern Occult, 449. Jesup, North Pacific Expedition, 217. Jones, H. C., Theory of Electrolytic Dissociation, 213. Keane on Man, Past and Present, 218. Keeler, James Edward, Death of, 667. Keeler’s Bird Notes Afield, 215; Our Native Trees, 328. Kingsley’s Vertebrate Zoölogy, 214. Kite Flying, Scientific, 559. Laboratory, National Physical, 221. Lange’s Chemische-technische Untersuchungsmethoden, 214. LANGLEY, S. P., Solar Eclipse of May 28, 1900, 302. Law, International, and the Peace Conference, JAMES HARRIS VICKERY, 76. LAW, V. MARSHALL, The Fate of the Beagle, 86. Legislation, against Medical Discovery, C. W. ELIOT, 436; regarding the Importation of Animals, 560. Light, New Sources of, and of Röntgen Rays, HENRY CARRINGTON BOLTON, 310. Liquid Air, 102. Longevity, Comparative, and Greatness, JOSEPH JASTROW, 206. Lounsberry’s Guide to the Trees, 216. LUCAS, FREDERIC A., Birds as Flying Machines, 473. McCarthy on Familiar Fish, 553. MacDOUGAL, D. T., The New York Botanical Garden, 171. MacDougal’s Nature and Work of Plants, 216. McMillan’s Electro-metallurgy, 214. Malaria, and the Malarial Parasite, PATRICK MANSON, 310; and Mosquitoes, 336. Manson, Marsden, Mount Tamalpais, 69. MANSON, PATRICK, Malaria and the Malarial Parasite, 310. Massachusetts Institute of Technology, Technical Education in, G. F. SWAIN, 257. Mathematical Physics, 327. Meat, Diseased, in Paris, 104. Mental Energy, EDWARD ATKINSON, 632.