CONTENTS. Vll 



Numlber 155. 



Page 



Art. XLII. — Some New Measurements with the Gas Ther- 

 mometer ; by A. L. Day and J. K. Clement 405 



XLIII. — Eange of the a-Rays ; by W. Dvjane 464 



XLIV. — Alteration of Angite-Ilmenite Groups in the Cum- 

 berland, R. I., Gabbro (Hessose) ; by C. H. Warren _. 469 



XLV. — Studies in the Cyperacese. XXVI. Remarks on the 

 structure and affinities of some of Dewey's Varices / by 

 T. Holm 478 



XLVI. — Applications of the Lorentz-FitzGerald Hypothesis 

 to Dynamical and Gravitational Problems ; by H. A. 

 Bumstead 493 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Utilization of Atmospheric Nitrogen, A. Frank: 

 Action of Eadinm Emanation on Solutions of Copper Salts, Mdme. Curie 

 and Mdlle. Gleditsch, 509. — Formation of Mists in Presence of Eadium 

 Emanation, Mdme. Curie : Preparation of Argon, Fischer and Binge : 

 Chemical Analysis of Iron, A. A. Blair : Decomposition of Water Vapor 

 by Electric Sparks, A. Holt and E. Hopkinson, 511. — Eeflection from 

 Glass at the Polarizing Angle, Eayleigh : Emission of Electrons from 

 Glowing Metallic Oxides, F. Jentzsch : Kinetic Energy of the Negative 

 Electrons Emitted by Hot Bodies, 0. W. Eichardson, 512. 



Geology and Mineralogy — Die Entwicklung der Kontinente und ihrer Lebe- 

 welt, ein Beitrag zur vergleichenden Erdgeschichte ; T. Arldt, 512. — 

 Archhelenis und Archinotis, H. v. Ihering, 513. — Camarophorella, a 

 Mississippian Meristelloid Brachiopod, J. E. Hyde : Geology of Pike 

 County, E. E. Eowley : Annual Eeport of the State Geologist of New 

 Jersey, for the year 1907, H. B. Kummel : Geological Survey of Canada, 

 514. —Mission scientifique au Dahomey, H. Hubert. — Fossil Turtles of 

 North America, 0. P. Hay, 516. — Beautiful Cinnabar Crystals from China, 

 A. H. Petereit, 517. 



Botany — Gray's New Manual of Botany, 518. 



Miscellaneous Scientific Intelligence. — Carnegie Institution of Washington, 

 519. — Eicerche Lagunari : Beitrage zur Chemischen Physiologie und 

 Pathologie, F. Hofmeister : Canada's Fertile Northland, E. J. Chambers, 

 520. 



