VI CONTENTS. 



Number 202. 



Page. 



Art. XXVII. — The relation between Wind Velocity and 



Pressure; by H. Allek Hazen 241 



XXVIII. — Is there a Huronian Group? by R. D. Irving 249 



XXIX. — Oxygen in the Sun ; by J. Trowbridge and C. C 



Hutchins 263 



XXX. — Bisniutosphasrite from Willirnantic and Portland, 



Conn.; by H. L. Wells 271 



XXXI. — Note on some remarkable Crystals of Pyroxene 



from Orange County, N. V.; by G. H. Williams 275 



XXXII. —The Flow of Solids ; by W. Hallock. . 277 



XXXIII. — Analyses of some Natural Borates and Borosili- 



cates ; by J. E. Whitfield 281 



XXXIV. — The Texas Section of the American Cretaceous; 



by R. T. Hill .. 287 



XXXV.— Notice of New Fossil Mammals ; by O. C. Marsh 323 



SCIENTIFIC INTELLIGENCE. 



Physics and Astronomy. — Papers in Armalen der Physik unci Chenrie, No. 8 b , for 

 1887, 309. — The production, properties and vises of very fine threads, Bots: 

 Photography by Vital Phosphorescence, Vansant, 311. — Annual Reports of the 

 Board of Directors of the Chicago Astronomical Society : Annals of the Harvard 

 College Observatory, Pickering : Resultados del Observatorio Nacional Argen- 

 tino en Cordoba durante la direcion del D or B. A. Gould ; Juax M\ Thome, 

 Director, 312. 



Geology and Mineralogy. — Damming and erosion by Greenland ice, Marr, 312. — 

 Variations in water-level in enclosed Seas, Stjess. 313. — Unconformability be- 

 tween the Animikie and the Vermilion Series, Winchell : Catalogue of the 

 Fossil Mammalia in the British Museum, Lydekker. 314. — Mineral Localities 

 in the Western United States. 315. 



Miscellaneous Scientific Intelligence. — British Association, 315. — Memoirs of the 

 National Academy of Sciences, Vol. Ill : Smithsonian Institution and the 

 Pish Commission. 319. — Obituary. — Spencer Fui.lerton Baird. 319 — Alvan 

 Clarke, 322. 



