Vlll CONTENTS. 



Number 30. 



Page 



Art. XLIX. — Theory to Explain the Stratification of the 

 Electric Discharge in Geissler Tubes; by H. V. Gill. 

 (With Plates IV, V.) 399 



L. — Orthoclase as gangne mineral in a fissure vein ; by W. 



LlNDGREN ... 418 



LI. — Notes on Rocks and Minerals from California ; by H. 



W. Turner... _ 421 



LII. — Mineralogical Notes on Anthophyllite, Enstatite and 



Beryl (Emerald) from North Carolina; by J. H. Pratt 429 



LIIL — Bethany Limestone at Bethany, Missouri ; by H. F. 



Bain 433 



LIV. — Psychrometer applicable to the Study of Transpira- 

 tion ; by R. G. Leavitt 440 



LV. — Action of Carbon Dioxide on Soluble Borates ; by L. 



C. Jones 442 



LVI. — Jerome (Kansas) Meteorite; by H. S. Washington. 447 



LVII. — Comments on Bulletin 21. "Solar and Terrestrial 

 Magnetism in their relations to Meteorology ; " by F. 

 H. Bigelow -. . _ . 455 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Electrolytic Dissociation and Osmotic Pressure, 

 Traube : New Substance for increasing the Angle of Rotation, Walden, 463. 

 — Influence of the Silent Discbarge on Atmospheric Air, Shenstone and 

 Evans, 464. — Action of Hydrogen on Sulphuric Acid. Berthelot: Preparation 

 of dry Hydrogen cyanide and Carbon monoxide, Wade and Panting, 465. — 

 Electrolytic production of Iodoform, Foerster and Meyes: Physikalisch- 

 chemische Institut der Universitat Leipzig: Manual of Quantitative Chemical 

 Analysis, 466. — Fluorescence and Actinic Electricity, G-. C. Schmidt: New 

 Method of determining the inclination and horizontal intensity of the earth's 

 magnetism, G. Meyer: Rontgen Rays and ordinary light, Lord Rayleig-h, 467. 

 — Method of Measuring the Pressure at any Point on a Structure, due to wind 

 blowing against that Structure, F. E. Nipher, 468. 



Geology and Mineralogy — Geological Survey of New Jersey : Physical Geogra- 

 phy of New Jersey, R. D. Salisbury and C. C. Yermeule, 468. — Cretaceous 

 of Athabasca River, J, B. Tyrrell: Mineral Resources of the U. S. for 1896, 

 D. T. Day: Artificial Production of Diamond m Silicates corresponding to the 

 Actual Mode of Occurrence in South Africa, I. Friedlander. 469. — Contribu- 

 tion to the Petrography of the Boston Basin, T. G. White, 410. 



Botany — Structure of the cell-wall, W. Gardiner, 470. — Phytogeography of 

 Nebraska, R. Pound and F. E. Clements: Text-book of Botany, Strasburger. 

 Schimper, Noll and Schenck, 471. — Fossil Plants, for students of Botany and 

 Geology, A. C. Seward: Contributions to Japanese Characeae, T. F. Allen, 

 472. 



Index to Volume V, 473. 



