Vlll CONTENTS. 



Number 72. 



Page 



Art. XLIII. — Geology .of the Little Colorado Valley; by 

 • L. F. Ward 401 



XLIV. — Pyrite and Marcasite ; by H. N. Stokes 414 



XLV. — Studies of Eocene Mammalia in the Marsh Collection, 



Peabody Museum ; by J. L. Wortman. With Plates 



VIII and IX ..... 421 



XL VI. — Dielectric Constant of Paraffins ; by W. G. Hormell 433 

 XLVII. — New Mineral Occurrences in Canada ; by G. C. 



Hoffmann 44V 



XL VIII. — Estimation of Molybdic Acid reduced by Hydriodic 



Acid ; by F. A. Gooch and O. S. Pulman, Jr 449 



XLIX. — Veramin Meteorite, by H. A. Ward 453 



SCIENTIFIC INTELLIGENCE 



Chemistry and Physics — Double Compounds of Antimony Pentachloride, etc., 

 Rosenheim and Stellmann: Thermochemistry of Alloys, T. J. Baker: Acid 

 Nitrates, Wells and Metzger, 460. — Methods of Standardizing Acid Solutions, 

 C. G. Hopkins, 461. — New Element Associated with Thorium, C. Baskerville: 

 Laboratory Guide to the Study of Qualitative Analysis, E. H. S. Bailey and 

 II. P. Cady: Elements of Qualitative Analysis, W. A. Noyes, 462. — Hetero- 

 gene Gleichgewichte von Standpunkte der Phasenlehre, H. ~W. B. Roozeboom : 

 Viscosity of Helium, H. Schultze: Air-tight glass stop-cocks, H. Thiele and 

 M. Eckardt: Migration of the ions, R. Gans, 463. — Photometry of the Ultra- 

 violet rays, H. Kreusler, 464 



Geology and Mineralogy — Glaciation in Tierra del Puego and in the Antarctic, H. 

 ARgTOWSKi, 464. — Glaciers of Switzerland in 1900, S. Finsterw alder and E. 

 Muret : United States Geological Survey, C. D. Walcott, 465. — Indiana: 

 Department of Geology and Natural Resources, W. S. Blatchley : Geological 

 Survey of New Jersey, Animal Report, 1900 : Ice Ramparts, E. R. Buckley, 

 466. — Syllabus of a Course of Lectures on Elementary and Economic Geology, 

 J. C. Branner and J. F. Newsom : Loess of Iowa City and Vicinity, B. 

 Shimek : River System of Connecticut, W. H. Hobbs: Sivamalai Series of 

 Eleolite-Syenites and Corundum-Syenites in the Coimbatore Distr., Madras 

 Presidency, T. H. Holland, 467. — Peculiar Form of altered Peridotite, T. H. 

 Holland: Perknite, H. W. Turner, 468. — Outline of Elementary Lithology, 

 G. H. Barton: Synchisite and Molybdophillite : Crystallization of Stannite, L. 

 J. Spencer : Conchite and Ktypteite, H. Vater : Meteorite of Felix, Perry 

 County, Alabama, G. P. Mebrill, 469. 



Zoology — Nomenclature of Bermuda Birds, A. H. Verrill, 470.— Reports on the 

 Fauna of Porto Rico, 471. — Papers from the Alaska Harriman Expedition, 

 W. R. Coe : Zoology : An Elementary Text Book, A. E. Shipley and E. W. 

 Mac Bride : Elementary Course of Practical Zoology, T. J. Parker and W. N. 

 Parker, 472. 



Miscellaneous Scientific Intelligence — National Academy of Sciences, 472 — Annual 

 Report of the Board of Regents of the Smithsonian Institution, for the year 

 ending June 30. 1900: Smithsonian Institution: Documents relative to its 

 Origin and History, 1835-1899, W. J. Rhees, 473.— Beitrage zur chemischen 

 Physiologie und Pathologie : Annals of Harvard College Observatory, E. C. 

 Pickering: Royal Society of London, Copley Medal, 474. 



Obituary — Rudolph Koenig: Professor A.. F. W. Schimper, 474. 



