CONTENTS 



Page 



Akt. XLIIL— 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. Woetman. With Plates 



VIII and IX 421 



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

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



Hoffmann .._ _. 447 



XL VIII. — Estimation of Molybdic Acid reduced by Hydriodic 



Acid ; by F. A. Gooch and O. S. Pcjlman, 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. Baskeryille: 

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

 II. P. Cady: ElemeDts 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 Fuego and in the Antarctic, H. 

 Arctowski, 464. — Glaciers of Switzerland in 1900, S. Finsterwalder 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, Annual 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. 

 Soimek: 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. Merrill, 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. 

 MacBbide: 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: Eoyal Society of London, Copley Medal, 474. 



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



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