CONTENTS TO VOLUME XXYIII. 



Nu. ~r 163. 



Page 

 Art. I. — On the Magnetic Properties at High Excitations of 



a Remarkably Pure Specimen of Soft Norway Iron ; by 



B. O. Peirce 1 



II. — Notes on some Rocks from the Sawtooth Range of the 



Olympic Mountains, Washington ; by R. Arnold 9 



III. — Analysis of the Mineral Neptunite from San Benito 



County, California ; by W. M. Bradley 15 



IV. — Turtles from Upper Harrison Beds ; by F. B. Loomis. _ IV 



V. — Pyrogenetic Epidote ; by B. S. Butler 27 



VI. — Gravimetric Determination of Free Iodine by Action of 



Metallic Silver; by F. A. Gooch and C. C. Perkins.. 33 

 VII. — Pyromorphite from British Columbia, Canada ; by O. 



Bowles .__ 40 



VIII. — Application of the Term Laramie; by A. C. Peale. 45 

 IX. — Descriptions of New Genera and Species of Starfishes 



from North Pacific Coast of America ; by A. E. Verrill 59 

 X. — Rare Rock Type from the Monteregian Hills, Canada ; 



by J. A. Dresser 7 1 



SCIENTIFIC INTELLIGENCE. 



Chemistry andPhysics — Cuprous Sulphate, A. Recoura : Action of Hydrogen 

 Antimonide upon Dilute Silver Solutions, H. Reckleben, 74.— Separation 

 of Antimony and Tin, G. Panojotow : Purification of Sulphuric Acid by 

 Freezing, Morance, 75. — Heat of Formation and Stability of Lead and 

 Silver Compounds, A. Colson : Refraction of Rontgen Ra\s, B. Walter and 

 R. Pohl : Polarization of Rontgen Rays, J. Herweg : Absorption of the 

 } -Rays of Radium by Lead, Y. Taomikoski, 76. — Use of Zinc Sulphate in 

 the Braun Tube, F. Giesel and J. Zen neck, 77. — Luftelektrizitat, A. 

 Gockel : La Materia Radiante e i Raggi Magnetici, A. Righi : Text-book 

 of Sound, E. H. Barton, 77. — Applied Mechanics for Engineers, E. L. 

 Hancock : Absorption Spectra of Solutions, H. C. Jones and J. A. 

 Anderson, 78. — Electricity, Sound and Light, R. A. Millikan and J. 

 Mills : Einf iihrung in die Elektrotechnik, C. Heinke : La Machine a 

 Influence, son Evolution, sa Theorie, V. Schapfers, 79. 



Geology and Natural History — Publications of the United States Geological 

 Survey, G. O. Smith : Geological Survey of Canada, R. W. Brock, 80. — 

 Geological Survey of Western Australia, H. P. Woodward : New Zealand 

 Geological Survey Department : Mineral Survey of Ceylon, 81. — Mineral 

 Resources of Virginia, T. L. Watson : Minerals of Arizona : Das Salz, dessen 

 Vorkommen und Verwertung in Samtlichen Staaten der Erde, 82. — Brief 

 Notices of some Recently Described Minerals; 83. — Guide dans la Collec- 

 tion des Meteorites avec le Catalogue des Chutes representees au Museum : 

 Mendel's Principles of Heredity. 84. — Contributions from the Gray Herba- 

 rium of Harvard University : Elemente der exakten Erblichkeitslehre, 85. 



Miscellaneous Scientific Intelligence — Publications of the U. S. Coast and 

 Geodetic Survey, 86. — Hypsometry : Precise Leveling in the United States, 

 1903-1907 : Bureau of American Ethnology, Smithsonian Institution : 

 Museum of the Brooklyn Institute of Arts and Sciences : Report of Pro- 

 ceedings of the American Mining Congress : Publication of the Works of 

 Amedeo Avogadro, 87. — Proposed Publication of the Works of Leonhard 

 Euler : Prizes offered by the Austrian Society of Engineers and Architects: 

 Psycho-Biologie et Energetique, Essai sur un Principe des Methodes intui- 

 tives de Calcul : Die Einheit des physikalischen Weltbildes : Phrenology 

 or the Doctrine of the Mental Phenomena, 88. 



