VI CONTEXTS. 



Number 262. 



Page. 



Art. XXXIV.— On a Color System; by O. N. Rood 263 



XXXV. — An Ottrelite-bearing phase of a Metamorphic Con- 

 glomerate in the Green Mountains; by C. L. Whittle. 270 



XXXVI. — Age-Coating in Incandescent Lamps; by E. L. 



Nichols 277 



XXXVII. — Mica-peridotite from Kentucky ; by J. S. Diller 286 



XXXVIII. — Glaciation in the Finger-Lake region of New 



York; by D. F. Lincoln . 290 



XXXIX. — Certain Points in the Interaction of Potassium 

 Permanganate and Sulphuric Acid ; by F. A. Gooch 

 and E. W. Danner 301 



XL. — Crystallography of the Caesium-Mercuric Halides ; by 



S. L. Penfield 311 



XLL— Silver Iiemisulphate; by M. C. Lea ___ 322 



Appendix. — XLII. — Restorations of Claosaurus and Cerato- 



saurus ; by O. C. Marsh. (With Plates VI and VII) . 343 



XLIIL— -Restoration of Mastodon Americanus, Cuvier • by 



O. C. Marsh. (With Plate VIII) 350 



SCIENTIFIC INTELLIGENCE. 



Geology — Geology of the Taylorville Region of California, J. S. Diller : Jura and 

 Trias at Taylorville, A. Hyatt: Geological Survey of the State of New York; 

 Palaeontology. Vol. VIII, J. Hall, 330. — Report of the Arkansas Geological 

 Survey for 1890, Vol. Ill, Whetstones and Novaculites of Arkansas. L. S. 

 Griswold, 332. — Occurrence of- Artesian and other underground waters in 

 Texas, etc. R. T. Hill: Geological Society of America: Albirupean Studies, P. 

 R. Uhler, 333. — Fossil Flora of the Bozeman Coal Field, F. H. Knowlton: 

 Paleontologie Vegetale (Ouvrages publies en 1890), R. Zeiller, 334.— Sylloge 

 Fungorum Fossilium hucusque cognitorum, A. Meschinelhi, 335. — Tronchi di 

 Bennettitee dei Musei Italiani, G. Capellini and E. Solms-Laubach: Ueber 

 den gegenwartigen Standpunkt unserer Kenntniss von dem Vorkommen fossiler 

 Glacialpflanzen, A. G. Nathorst, 336. 



Miscellaneous Scientific Intelligence — American Association for the Advancement of 

 Science, 337. — British Association: Periodic variations in Glaciers: Florida, 

 South Carolina and Canadian Phosphates, C. C. H. Millar, 342. 



