C O N T E N T S. 



Page 



Art. XXXVIII. — Podokesaurus holyokenais, a New Dino- 

 saur from the Triassic of the Connecticut Valley : by M. 

 Talbot. (With Plate IV.) _ .... 469 



XXX IX. — Minerals Associated with Diamonds and Carbon- 

 ados in the State of Bahia, Brazil ; by J. C. Branner.. 4S0 



XL. — An Engelhardtia from the American Eocene; by E. 



W. Berry ' 491 



XLI. — Use of Sodium Paratungstate in the Determination 

 of Carbon Dioxide in Carbonates and Nitrogen Pent- 

 oxide in Nitrates ; by F. A. Gooch and S. B. Kt/ziri ws 497 



XLII. — Influence of Pressure on the Melting Points of 



Certain Metals; by J. Johnston and L. II. Adams 501 



XLIII. — A New Occurrence of Pearceite ; by F. B. Van 



Horn and C. W. Cook _. 518 



XLIV. — Mollugo verticillata L. ; by T. Holm 52.3 



XLV. — Composition and Crystallization of Parisite and 

 Occurrence in the Granite-Pegmatites at Quincy, Mass., 

 U. S. A., etc., by C. Palaciie and C. II. Warren 533 



XL VI. — Notes on the Absence of a Soil Bed at the Base of 



the Pennsylvanian of Southern Ohio ; by J. E. Hyde .. 557 



XLVII. — A New Jolly Balance ; by E. H. Kkats _ ~<<\ 1 



XLVIII. — Independence of the Coronas of the Thickness of 



the Fog Layer ; by C. Barus 504 



SCIENTIFIC INTELLIGENCE. 



Chemist ru and Physics. — Radium Contents of some Uranium Minerals, 

 Marckwald and Russell, 566. — .Determination of Cane Sugar in the 

 presence of other Sugars, A. Jolles : Action of Sulphur Dioxide upon 

 Ammonia, Ephraim and Piotrovvski, 567. — Quantitative Chemical Analy- 

 sis of Mixtures, H. Friedenthal : Metallic Coloring in Birds and 

 Insects, A. A. Michelson, 56S. — Isolation of an Ion, a Precision Meas- 

 urement of its Charge, and the correction of Stokes Law, R. A. Millikax. 

 570. — Homogeneous Rontgen Radiation from Vapors, J. C. Chapman, 

 571. — Lehrbuch der Kristallphysik. W. Voigt, 572. — Electrical Nature of 

 Matter and Radioactivity, H. C. Jones, 573. 



Geology and Mineralogy. — Illinois State Geological Survey: New Zealand 

 Geological Survey. 573. — Geological Survey of Western Australia : Geo- 

 logical Survey of Canada. 574. — Mineral Production in the United States 

 in 1909, 575. — Production of Gems and Precious Stones in 1909 : Production 

 of Bauxite in 1909 : Origin of the Thermal Waters in the Yellowstone 

 National Park, 570. — Tables for the Determination of Minerals. E. H. 

 Kraus and W. F. Hunt : Striiverite, R. C. Wells, 57 7. 



Miscellaneous Scientific Intelligence. — Bulletin of the Bureau of Standard-: 

 Prehistoric Period iu South Africa, J. P. Johnso.n. 578. — Field Mui 

 of Natural History : Astronomical and Astrophysical Society of America, 

 580. — Harvard College Observatory : Cincinnati Observatory : Princeton 

 University Observatory : R. Comitato Talassografico Italiano. 581.— Con- 

 gress of the Applications of Electricity : Congress of Applied Chemistry ; 

 Anthropological Society : University of Bologna. 582. 



Obituary. — Samuel H. Scudder ; M. Edouard Dupoxt : Thomas Rupert 

 Jones : J. Bosscha. 582. 



Index to Volume XXXI. 583. 



313 



V 



