VI CONTENTS. 



NUMBER CLXXVIH. 



Page 



Art. XXXII.— Crumpling of the Earth's Crust; by W. B. 



Taylor, J 249 



XXXIII.— The Old Tertiary of the Southwest ; by E. W, 



Hllgard, 266 



XXXIV. — Remarks on a paper of Dr. Otto Meyer on 



" Species in the Southern Old-Tertiary ; " by E. A. 



Smith, 270 



XXXV. — Native Antimony and its Associations at Prince 



William, York County, New Brunswick ; by G. F. 



Kuxz, 275 



XXXVI.— Crystalline Rocks of Alabama ; by C. H. Hitch- 

 cock, 278 



XXXVII. — Geometrical Form of Volcanic Cones and the 



Elastic Limit of Lava ; by G. F. Becker, 283 



XXXVIII. — Notice of a new genus of Pteropods from the 



Saint John Group (Cambrian) ; by G. F. Matthew, 293 



XXXIX.— Cope's Tertiary Vertebrata ; by J. L. Woetman, 295 

 XL. — Observations' upon the Tertiary of Alabama ; by T. H. 



AldriCh, 1 300 



XLI. — Electrical Furnace and the reduction of the Oxides of 



Boron, Silicon, Aluminum and other metals by Carbon ; 



by E. H. Cowles, A. H. Cowles and C. F. Mabeey,... 308 

 XLIL— The Grand Rapids Meteorite; by R. B. Riggs, 312 



SCIENTIFIC INTELLIGENCE. 



Chemist?"}/ and Physics. — Sensitiveness of Selenium and Sulphur to Light, S. 



. Bidwell, 313. — Molecular Shadows in Incandescent Lamps, J. A. Fleming: 



Disintegration of the carbon filament in an incandescent Electric lamp, 



Buchanan, 314. — Changes produced by magnetization in the length of rods 



of Iron and Steel, S. Bidwell, 315. 



Geology and Mineralogy. — Notes on some of the Geological Papers presented at 

 the Meeting of the American Association at Ann Arbor, 315. — Can underground 

 heat be utilized?, J. S. Gardner, 317. — A gigantic bird of the Lower Eocene 

 of Croydon, Gastornis Klaassenii, E. T. New-ton : Comstock Mining and Miners, 

 E. Lord: Materialien zur Mineralogie Russlands von N. V. Kokscharow, 318. 



Botany. — The Microscope in Botany : a Guide to the Microscopical Investigation 

 of Vegetable Substances, A. B. Hervet and B. H. "Ward: Bulletin of the 

 California Academy of Sciences, 319. — Systematic Catalogue of the Flowering 

 Plants and Ferns in Ceylon, H. Trtmen, 321. — Hon. George W. Clinton, 322. 



Astronomy. — Identity of Denning's and Biela's comets, 322. 



Miscellaneous Scientific Intelligence. — Meeting of the American Association for the 

 Advancement of Science at Ann Arbor, Michigan, 322. — U. S. Coast and 

 Geodetic Survey, 328. 



