CONTENTS. 



Nbimlber 147. 



Page 



Art. XXI. — Evolution of the Elephant; by R. S. Lull 169 



XXII. — Manganese Ore Deposits of Brazil ; by O. A. Derby 213 



XXIII. — Possible Overflow Channel of Ponded Waters Ante- 

 dating the Recession of Wisconsin Ice ; by F. Carney 21*7 



XXIY. — Axial Colors of the Steam Jet and of Coronas ; by 



C. Barus 224 



XXV.— Descriptions of Tertiary Insects, II ; by T. D. A. 



COCKERSLL -- 22 7 



XXVI. — Reduction of Vanadic Acid by Zinc and Magne- 

 sium ; by F. A. Goocii and G. Edgar 233 



XXVIL— Ancient Finger Lakes in Ohio ; by G. D. Hubbard 239 



XXVIII. — Stephanite Crystals from Arizpe, Sonora, Mexico; 



by W. E. Ford . .'. 244 



XXIX. — LJse of the Filtering Crucible in Electrolytic Analy- 

 sis ; by F. A. Goocn and F. B. Beyer 249 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics— Phosphorescent Elements, G. Urbain : Metallic 

 Vacuum Vessels for Liquid Air, J. Dewar : Manganese and the Periodic 

 Law, Reynolds, 256. — Higher Oxides of Manganese, Meyer and Rotgers : 

 White Phosphorus. Llewellyn, 257. — Radiometer for Measurement of 

 Low Pressures, J. Dewar : Existence of Positive Electrons in the Sodium 

 Atom, R. W. Wood : Magnetic Effect of Cathode Rays, E. Klupathy : 

 Practical Physics, W. S. Franklin, C. M. Crawford and B. Macnutt : 

 Praktische Photometrie, E. Ltebenthal, 258. — Principles of Physics, 

 A. P. Gage : Text-book in Physics for Secondary Schools, W. N. Mumper : 

 Laboratory Exercises in Elementary Physics, H. Newman, 259. 



Geology and Mineralogy — Earthquakes, an Introduction to Seismic Geology. 

 W. H. Hobbs, 259. — Glaciers of the Canadian Rockies and Selkirks, W. H, 

 Scherzer : Traite de Geologie, E. Haug, 261. — La Science Seismologiquef 

 Les Tremblements de Terre, M. de Ballore : Lower Paleozoic Fossils of 

 the Northern Shan States, Burma, F. R. Cowper Reed, 262. — Summary o. 

 the Geology of India, E. W. Vredenburg : Die 'Fossilen Insecten, A. 

 Handlirsch : Evolution of Mammalian Molar Teeth to and from the Tri- 

 angular Type, H. F. Osborn : Mineral Resources of the United States, 

 Calendar Year 1906, 264. — Handbueh der Mineralogie, C. Hintze : Meteor 

 Crater of Canyon Diablo, Arizona, G. P. Merrill, 265. — Foyer Collection 

 of Meteorites, 266. 



Miscellaneous Scientific Intelligence — Introduction to Higher Algebra, M. 

 Bocher, 266. — Observations simultanees de la Surface de Jupiter, 267. — 

 L'Heure a Paris, Jean Mascart : Globus-karte, F. Sipman, 268. 



