vi CONTENTS. 



Number 100. 



Page 



Art. XXIII. — Criteria relating to Massive-Solid Volcanic 



Eruptions ; by I. C. Russell 253 



XXIV. — New Nepheline Rock from the Province of Ontario, 



Canada; by F. D. Adams ._ 269 



XXV. — Note on a Calcite-Prehnite Cement Rock in the Tuff 



of the Holyoke Range; by B. K. Emerson 27V 



XX VI.— Developmental Changes in some Common Devo- 

 nian Brachiopods ; by P. E. Raymond. (With Plates 

 XII-XVIII) -.- 279 



XXVII.— Studies in the Cyperacese ; by T. Holm. XXI. 

 New or little known species of Carex. (With figures in 

 the text, drawn by the author) 301 



XXVIII. — Characters of Pteranodon (Second Paper); by G. 



F. Eaton. (With Plates XIX and XX) 318 



XXIX. — Palseontological Evidence for the Original Trituber- 



cular Theory ; by H. F. Osborn. (With Plate XXI) .. 321 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Gases Occluded or Evolved by Radium Bromide, 

 Dewae and Curie : Uranyl Double Salts, Rimbach, Burger and Grewe, 

 324. — Presence of Formic Aldehyde in the Atmospheric Air, H. Henriet : 

 Revision of the Atomic Weight of Iron, Baxter, 325. — Method of Separa- 

 ting Iron and Aluminium, Leclere : Phosphorescence, A. Dahms : Prelim- 

 inary Measurements of the Short Wave Lengths discovered by Schumann, 

 326. — Heating effect of the Radium Emanation, Rutherford and Barnes : 

 Nature of the Emanations from Radium, Kelvin, 327. 



Geology and Natural History — United States Geological Survey : Glacial 

 Geology of Tasmania, J. W. Gregory, 328. — Report on a Geological 

 Reconnoissance of the Iron Region of Angat, Bulacan, H. D. McCaskey : 

 Mineral Tables for the Determination of Minerals by their Physical Proper- 

 ties, A. S. Eakle : Meteorite Catalogues : Fauna and Geography of the 

 Maldive and Laccadive Archipelagoes, J. S. Gardiner, 329. — North 

 American Fauna, No. 23, Index Generum Mammalium, T. S. Palmer, 330. 



Miscellaneous Scientific Intelligence— Christian Faith in an Age of Science, 

 W. N. Rice, 330. — Beitrage zur chemischen Physiologie, F. Hofmeister, 

 331. — Astronomical Observatory of Harvard College : Publications of the 

 United States Naval Observatory : Where did Life Begin ? G. H. Scribner . 

 Field Columbian Museum : Bureau of American Ethnology ; Twentieth 

 Annual Report to the Secretary of the Smithsonian Institution, 1898-99, 

 332. 



