iv CONTENTS. 



Number 62. 



Page 

 Art. VII.— Apparent Hysteresis in Torsional Magnetostric- 

 tion, and its relation to Viscosity ; by C. Barus 91 



VIII.— Dinosaurian Genus Creosaurus, Marsh; by S. W.- 



Williston --- HI 



IX — Stereographic Projection and its Possibilities, from a 

 Graphical Standpoint; by S. L. Penfield. (With 



Plates II, III and IV.) 115 



X. — Melting Point of Gold; by L. Holborn and A. L. Day 145 

 XI. — New mineral occurrences in Canada ; by G. C. Hoff- 

 mann 149 



XII. — Spectrum of the more Volatile Gases of Atmospheric 

 Air, which are not Condensed at the Temperature of 

 Liquid Hydrogen ; by S. D. Liveing and Dewar 154 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Diethyl Peroxide, Baeyer and Villiger, 162. — 

 Ammonium Amalgam, A. Coehn : Hydrogen Telluride, Ernyei, 1 63. — Conduc- 

 tivities of some Double Salts as Compared with the Conductivities of Mixtures 

 of their Constituents, F. Lindsay : Cause of the Loss in Weight of Commercial 

 Platinum when Heated, R. W. Hall: Elementary Treatise on Qualitative 

 Chemical Analysis, J. F. Sellers, 164. — Bedeutung der Phasenlehre, H. W. 

 B. Roozeboom: Visibility of Hydrogen in Air, Lord Rayleigh: Wireless 

 Telegraphy, Slaby and Count Arco, 165. — Telegraphone, V. Poulsen: Proper- 

 ties of Argon and its Companions, W. Ramsay and M. W. Tea vers, 166 — 

 Studies from the Yale Psychological Laboratory, E. W. Scripture, 168. 



Geology and Mineralogy — Periodic Variations of Glaciers, F. A. Forel, 168. — 

 Contributions to the Tertiary Fauna of Florida, W. H. Dall: Record of the 

 Geology of Texas for the decade ending December 31, 1896, F. W. Simonds: 

 Geological Survey of Canada, G. M. Dawson: Report on the Geology and 

 Natural Resources of the Country traversed by the Yellow Head Pass Route 

 from Edmonton to Tete Jaune Cache, comprising portions of Alberta and 

 British Columbia, J. McEvoy, 170. — Mesozoic Fossils, Vol. I, Pt. IV. On 

 some additional or imperfectly understood fossils from the Cretaceous Rocks of 

 the Queen Charlotte Islands, with a revised list of the species from these rocks, 

 J. F. Whiteaves: Geology of the Albuquerque Sheet, C. L. Herrick and 

 D. W. Johnson : I Vulcani dell' Italia Centrale. Parte I. Vulcano Laziale, V. 

 Sabitini: Occurrence of Zoisite and Thulite near Baltimore, 111. 



Miscellaneous Scientific Intelligence— Transcontinental Triangulation and the 

 American Arc of the Parallel, C. A. Schott, 172. — Astronomical Observatory 

 of Harvard College, 173.— Norway; Official Publication of the Paris Exhibi- 

 tion, 1900: American Museum of Natural History: Principles of Mechanics: 

 an Elementary Exposition for Studeuts in Physics, F. Slate ; Knowledge 

 Diary and Scientific Hand-book for 1901, 174. 



