

CONTENTS. 



Page. 



Art. I. — Pressure Coefficient of Mercury Resistance; by A. 



deF. Palmer, Jr ,. 1 



II. — Ctenacanthus Spines from the Keokuk Limestone of 



Iowa; by C. R. Eastman 10 



III. — Studies in the Cyperacese, V. ; by T. Holm . _ 13 



IV. — Identity of Chalcostibite (Wolfsbergite) and Guejarite, 



and on Chalcostibite from Huanchaca, Bolivia; by S. L. 



Pexfield and A. Frenzel 27 



V. — Interesting Case of Contact Metamorphism ; by H. W. 



Fairbanks __ 36 



VI. — Tin Deposits at Temescal, Southern California; by H. 



W. Fairbanks 39 



VII. — Outlying Areas of the Comanche Series in Oklahoma 



and Kansas ; by T. W. Vaughan ... . _ _ 43 



VIII.— Electrosynthesis ; by W. G. Mixter 51 



IX. — Monazite from Idaho ; by W. Lixdgren _ . . 63 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Viscosity of Mixtures of Miscible Liquids, Thorpe and 

 Rodger: Specific Heats of the Gaseous Elements, Berthelot, 65. — Synthetic 

 Action of the Dark Electric Discharge, Losanitsch and Jovitschitsch : Struc- 

 tural Isomerism in Inorganic Compounds, Sabaneeff, 66. — Phase Rule, W. D. 

 Bancroft, 61.— Vorlesuugen uber Bildung und Spaltung von Doppelsalzen, 68. 

 — Limits of Audition, Lord Rayleigh, 69. — Polarization Capacity, C. M. Gor- 

 don : Oscillatory Currents arising in Charging a Condenser, Seiler : Cathode 

 Rays, 71. — Application of the Rontgen Rays to Surgery: Transparency of 

 Ebonite, M. Perrigot: Theory of Electricity and Magnetism, A. G. Webster, 

 72.— Light and Sound, E. L. Nichols and W. S. Eranklin, 73. 



Geology and Mineralogy — Examination of Deposits obtained from borings in the 

 Nile Delta, J. W. Judd, 74. — Underground Temperatures at Great Depths, W. 

 Hallook: Depth of Peat in the Dismal Swamp, G. R. Wieland: Currituck 

 Sound, Virginia and North Carolina, G. R. Wieland, 76. — Papers on Daemone- 

 lix: Genesis and Matrix of the Diamond, Lewis and Bonnet, 77. — Transac- 

 tions of the Geological Society of South Africa: Geological Survey of Canada, 

 G. C. Hoffmann, 78. 



Botany — New System of Classification of Phaenogamia, van Tieghem, 79. 



Miscellaneous Scientific Intelligence — Cause of Secondary Undulations Registered 

 on Tide Gauges, 82.— Zoological Bulletin, 83. 



Obituary— Alv an Graham Clark. 83. — Carl Remegius Fresenius, 84. 







