﻿CONTENTS 



Page 



Art. XVIII. — Post-Tertiary Elevation of the Sierra Nevada 



shown by the River Beds; by J. LjeCoxte .... 167 



XIX.— Strain-Effect of Sudden Cooling as Exhibited by Glass 



and Steel ; by C. Barus and V. Strouhal 181 



XX. — Devonian Lamellibranchiata and Species-making ; by 



H. S. Williams 102 



XXI. — Composition of Certain *' Pliocene Sandstones" from 



Montana and Idaho; by G. P. Merrill .. 199 



XXII. — Contributions to Mineralogy (with Crystallograpbic 



Notes by Des Cloizeaux) ; by W. E. Hidden^. 204 



XXIII. — Turquois from New Mexico; by F. W. Clarke 



and J. S. Diller 211 



XXV. — Electrical Resistance of Soft Carbon under Pressure ; 



by T. C. Mendenhall _ .... 218 



XXVI. — Comparison of Maps of the Ultra Violet Spectrum ; 



by E. C. Pickering 223 



XXVII. — Two hitherto undescribed Meteoric Stones; by 



E. S. Dana and S. L. Penfield 226 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — Density Pipette, A mat: "Water of Crystallization, Pick- 

 ering, 231.— Fulminating Silver of Berthollet, Rascrig, 232. — Formation of 

 Anhydrite or Anhydrous Calcium Sulphate, G. Spezia, 233. 



Geology and Mineralogy. — Volcanoes of Japan, J. Milne, 233. — Summit Crater of 

 Mt. Loa, Mokuaweoweo, Alexander, 235. — Kilauea, Hawaii: Map of Maui, of 

 the Hawaian Islands : Taconic stratigraphy and fossils, J. D. Dana, 236. — 

 Tertiary Ophiolitic and basic rocks of Scotland and Ireland, B. Lotti, 239. — 

 Onus probandi left for others, 240. — Preliminary Report upon Petroleum and 

 inflammable Gas of Ohio, E. Orton : Clay-beds on the west bank of the Hudson, 

 241. — Fossil Flora of the Laramie Series of Western Canada, W. Dawson, 

 242.— Decay of Building Stones. T. Kgleston : Geological Studies, A. Winchell, 

 243.— Glacial action in Australia : Analysis of Biotite. E. Claassen. 244. 



Botany.— Lloyd's Drugs and Medicines of North America: Cypripedium arieti- 

 num: Index to the Botanical Gazette, 244.— The Cayuga Flora, W. K. Dudley: 

 Catalogue of the Plants in the Herbarium of the College of Science, Tokyo, 

 Japan, 2 I 



Miscellaneous Scientific Intelligence, — The Races of Britain, J. Beddoc. 245. — Estu- 

 dios de Meterolo^ia Comparada, M. Barcena y M. Perez: Monument to 

 ITorace-Benedu Mire: Biographies of American Naturalists, HI, J. B. 



Marcou : La Terre des Merveilles, J. Leolercq. 216. 



Obituary.— Dr. Hermann A men, 246. 



