CONTENTS. 



Page 

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

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



XLIII. — Range of the a-Rays ; by W. Duane 464 



XLIY. — Alteration of Augite-Ilmenite Groups in the Cum- 

 berland, R. L, 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 



XL VI. — 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 Radium 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 Ringe : 

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

 by Electric Sparks, A. Holt and E. Hopklnson, 511. — Reflection from 

 Glass at the Polarizing Angle. Rayleigh : Emission of Electrons from 

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

 Electrons Emitted by Hot Bodies, 0. W. R r CHAJkPSON, 512. 



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

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

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

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

 County, R. R. Rowley : Annual Report of the State Geologist of New 

 Jersey, for the year 1907, by 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, 

 ArH. Petereit, 517. 



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



Miscellaneous Scientific Intelligence. — Carnegie Institution of Washington, 

 519. — Ricerche Lagunari : Beitrage zur Chemischen Physiologie und 

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

 520. 



