CONTENTS. 



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 T 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. Dannee . , 301 



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



S. L. Penfield . 311 



XLI.— Silver Hemisulphate; by M. C. Lea _• 322 



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



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



XLIII.— -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. HI, Whetstones and Novaculites of Arkansas, L. S. 

 Grtswold, 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 putties en 1890), R. Zeiller, 334. — Sylloge 

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

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

 den gegenvvartigen 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. 



