CONTENTS. 



Page 



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



Taylor, ." . . 249 



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



HlLGARD, . 266 



XX XIV. — Remarks ou 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. 



Kunz, 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. Beckeb, 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. Woetjian, 295 

 XL. — Observations upon the Tertiary of Alabama ; by T. H. 



Aldrich, " 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. Mabert,... 308 

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



SCIENTIFIC INTELLIGENCE. 



Chemistry 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. Bid well, 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. Newton : 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. Trimen, 321. — Hon. George "W. Clinton, 322. 



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



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

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

 Geodetic Survey, 328. 



TEN-VOLUME INDEX. 



An extra number of this Journal, containing an index to volumes xxi to xxx, 

 of sixty pages or more, will be ready in January. The publication of this num- 

 ber involves a large extra expense to the editors, and it will be sent, therefore, 

 to those only who specially order it. The price is seventy-five cents per copy. 

 Orders are solicited, as the edition will be a small one. 



