CONTENTS. 



Page. 



Art. XL VI. — New England and the Upper Mississippi basin 



in the Glacial period ; by J. D. Dana _. _..... 327 



XLVIL— Use of the Name "Catskill"; by J. J. Stevenson 330 



XLVIIL— Finite Elastic Stress-Strain Function ; by G. F. 



Becker _ 337 



XLIX. — Powellite from a new locality; by G. A. Koenig 



and L. L. Hubbard _ _ - - 356 



L. — Increasing the Frequency of Electrical Oscillations ; by 



A. H. Patterson and C. H. Arnold. _. 359 



LI. — Geology and Petrography of Conanicut Island, R. I. ; 



by L. V. Pirsson 363 



LII. — Larval Form of Triarthrus; by C. E. Beecher 378 



LIII. — Rise of the Mammalia in North America ; by H. F. 



Osborn __ __ 379 



Appendix. — L W. — Description of Miocene Mammalia ; by 



O. C. Marsh. (With Plates VII-X.) 407 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — Effect of Temperature on the Rotatory Power of Liquids, 

 Aignan: Flame Spectra of Metals, Cochin, 392. — Spectrum given by Nickel- 

 •carbonyl. Liveing and Dewar: Optical Properties of Liquid Oxygen, Olszew- 

 ski and Witkowski, 393. — Formation of Ozone from Oxygen, Shenstone and 

 Priest: Nitrocopper, Sabatier and Senderess. 394. — Dictionary of Applied 

 Chemistry, T. E. Thorpe: Connection between ether and matter, Lodge, 395. 

 — Chrono-photographic study of locomotion, M. Marey: Electrical oscillations 

 of very small wave-lengths, Righi, 396. — Theory of' electrical waves in wires, 

 A. Elsas: Polarization of ultra red rays by means of metallic gratings, H. E. 

 J. G. du Bois and H. Rubens: Interference of electrical waves in air, Klem- 

 encic and Czermak, 397. 



Geology and Mineralogy. — Iowa Geological Survey, Vol. I, 1892, S. Calvin, 397. 

 — Note upon some observations on the auriferous Gravel of lacustral origin in 

 the region of Taylorsville, California, J. S. Diller, 398.— Subtropical Miocene 

 fauna in Arctic Siberia, ~W. H. Dall, 399. — Glaciation of Asia: Two new local- 

 ities for Turquoise, W. E. Hidden, 400. 



Miscellaneous Scientific Intelligence. — North Polar Basin, 403. — Elementary Treatise 

 on Analytical Geometry, W. J. Johnson, 406. 



