VI CONTENTS.
Number 292.
Akt. XXL — Niagara and the Great Lakes ; by F. B.
Taylor .... 249
XXII. — Disturbances in the direction of the Plumb-line in
the Hawaiian Islands ; by E. D. Preston __„ 271
XXIII. — Glacial Lake St. Lawrence of Professor Warren
Upham; by R. Chalmers 273
XXIV. — Argon, a New Constituent of the Atmosphere ; by
Lord Rayleigh and W. Ramsay . _ _ _ _ _ 275
XXV. — Velocity of Electric Waves; by J. Trowbridge
and W. Duane 297
XXVI. — Epochs and Stages of the Glacial Period ; by W.
Upham . _ _ 305
XXVII. — Structure and Appendages of Trinucleus; by C.
E. Beecher. (With Plate III.) _ 307
SCIENTIFIC INTELLIGENCE.
Chemistry and Physics — Inorganic Preparation of Hydrazine, Duden, 311. — Production of Carbon chlorides at ordinary Temperatures, V. Meyer : Atomic masses of Nickel and Cobalt, Winkler, 312. — Atomic Mass of Bismuth, Schneider: Use of Dihydroxytartaric acid as a Reagent for Sodium, Fenton, 313. — Commercial Synthesis of Acetylene, Lewes, 314. — Theoretical Chemistry from the Standpoint of Avogadro's rule and Thermodynamics, W. Nernst, 315. — Qualitative Chemical Analysis of Inorganic Substances : Double refraction of Electric waves, K. Mack : National Academy of Sciences on Electrical Meas- urement, 316.
Geology and Mineralogy — Change of level in the West Indian Region, C. T. Stimpson, 321. — Glacial phenomena Northwest and West of Hudson Bay, J. B. Tyrrell: Faults of post-Glacial origin, G. F. Matthew: Pre-Cambrian Radi- olarians, L. Cayeux, 322. — Geological Survey of Alabama for 1894: Paleozoic Corallines: Lehrbuch der Petrographie, F. Zirkel, 323. — Chemical Contribu- tions to the Geology of Canada from the laboratory of the Survey, G. C. Hoff- mann: Meteoritenkunde, E. Cohen, 324.
Botany — Field, Forest and Garden Botany, A. Gray : Popular Treatise on the Physiology of Plants, P. Sorauer, 325.
Miscellaneous Scientific Intelligence — Prize-Question pertaining to Physical Science proposed by the Schnyder von Wartensee Foundation for Arts and Sciences at Zurich, 326. — American Association for the Advancement of Science: International Zoological Congress: Manual of the Study of Documents, P. Frazer: Smithsonian Geographical Tables, R. S. Woodward, 327. — French Academy of Sciences : Bulletin of the American Museum of Natural History, 328.
Obituary— Dr. G. A. Rex: Marquis de Saporta: Professor H. Wild: Dr. A. W. Stelzner, 328.
