Vlll CONTENTS. 



Number 114. 



Page 



Art. XLII. — Group of Visual Phenomena depending upon 



Optical Errors of the Human Eye ; by C. S. Hastings. 401 



XLTII. — Natural Iron-Nickel Alloy, Awaruite ; by G. S. 



Jamieson 413 



XLIV. — Hyopsodidge of the Wasatch and Wind River 



Basins ; by F. B, Loomis 416 



XLV. — Results of Late Mineral Research in Llano County, 



Texas ; by W. E. Hidden 425 



XLVI. — New Allotrope of Carbon and its Heat of Combus- 

 tion ; by W. G. Mixter _ . 434 



XLVIL— Reflection of Light by Colored Papers; by H. D. 



Minchin 445 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — New Experiments in Preparing Diamonds, Moissan : 

 Atomic Weights of Sodium and Chlorine, T. W. Richards and R. C. 

 Wells, 451. — Origin of Radium, B. B. Boltwood : MarceliNencki, Opera 

 Omnia — Gesammelte Arbeiten von M. Nencki, 452. — Manual of Chemical 

 Analysis as Applied to the Assay of Fuels, Ores, Metals, Alloys, Salts, 

 and other Mineral Products, E. Prost : Radiation Pressure, Poynting, 453. 

 Spontaneous Ionization of Air in closed Vessels and its Causes, A. Wood : 

 Radio-activity and Chemical Change, N. R. Campbell, : Helium Tubes as 

 Indicators of Electric Waves, E. Dorn : Specific Heat of Water and the 

 Mechanical Equivalent of Heat, C. Dieterici : Photograph of the Solar 

 Corona without a Total Eclipse, M. A. Hansky : Kristallinische Flussig- 

 keiten und Fliissige Kristalle, R. Schenck, 454. — "' N "-Rays, R. Blondlot : 

 Elektrische Bogenlicht, seine Entwickelung und seine physikalischen 

 Grundlagen, von Czudnochowsky, 455. — The New Knowledge, R. K. 

 Duncan : Percentage Tables for Elementary Analysis, L. F. Guttmann, 456. 



Geology and Miyieralogy—TJnited States Geological Survey, 456.— Contribu- 

 tions to Devonian Paleontology, H. S. Williams and E. M. Kindle, 460. 

 Structure of some Primitive Cephalopods, R. Ruedemann, 463. — Notes on 

 the Siluric or Omtaric section of Eastern New York, C. A. Hartnagel : 

 Trilobites of the Chazy Limestone, P. E. Raymond ; Contributions to the 

 Fauna of the Chazy Limestone on Valcour Island, Lake Champlain, G. H. 

 Hudson : Ueber Pteraspis dunensis, F. Drevermann : Notice of a new 

 Crinoid and a new Mollusk from the Portage rocks of New York, R. P. 

 Whitfield, 464. — Fossils of the Bahama Islands, with a list of the non- 

 marine mollusks, W. H. Dall : Relations of the Land and Fresh-water 

 Mollusk-fauna of Alaska and Eastern Siberia, W. H. Dall : Geological 

 Survey of Ohio : Bahama Islands : La Montagne Pelee et ses Eruptions, 

 A. Lacroix, 465. — Recherches geologiques et petrographiques sur POural 

 du Nord, L. Duparc et F. Pearce : Einleitung in die chemische Krystal- 

 lographie, P. Groth : Grundzuge der Krystallographie, C. M. Viola, 467. 



Miscellaneous Scientific Intelligence — Ascent of Water in Trees, A. J. Ewart, 

 468. — Problems of the Panama Canal, H. L. Abbot, 470. — Primer of 

 Forestry, G. Pinchot : Field Operations of the Bureau of Soils, 1903, M. 

 Whitney; Mechanism, S. Dunkerley, 471.— British Museum of Natural 

 History, Birds, W. R. Ogilvie-Grant : Catalogue of the Lepidoptera 

 Phalaenas in the British Museum, G. F. Hampson : Geographen-Kalender, 

 Haack : Publications of the Carnegie Institution, 472. — Cold Spring Har- 

 bor Monographs. M. E. Smallwood : Science Bulletins of the Brooklyn Insti- 

 tute of Arts and Sciences : Project for the Panama Canal, L. W. Bates. 



Obituary — Henry R. Medlicott : Professor Pietro Tacchini : Professor 

 Otto Struve, 473. 

 Index to Vol. XIX, 474. 



