IV CONTENTS. 



Number 242. 



Page 



Art. VII. — Problems of the Pacific Islands : by R. A. Dai.y 



(With Plate III) ; 153 



VIII. — Age of the Iron Ore in Eastern Wisconsin ; by T. E. 



Savage and C.S.Ross .' 187 



IX. — A Petrified Palm from the Cretaceous of New Jersey ; 



by E. W. Berry 193 



X. — Plaster of Paris and the Effect of Foreign Substances ; 



by E. L. Troxell 19S 



XI. — Note on the Variable Composition of Melanochalcite ; 



by TV F. Hunt and E. H. Kratts 211 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Extraction and Eeco very of Eadinni, Uranium and 

 Vanadium from Carnotite, C. L. Parsons, etc., 214. — Qualitative Separa- 

 tion of Silver from Univalent Mercury, N. v. Zweigbergk, 215. — Diffusion 

 of Solids, C. E. Van Orstrand and F. P. Dewey, 216. — Volumetric Deter- 

 mination of Cerium by Means of Potassium Permanganate, V. Lenher 

 and C. C. Meloche, 217. 



Geology and Mineralogy — Men of the Old Stone Age, their Environment. Life 

 and Art, H. F. Osborn, 217. — Permo-Carboniferous Eed Beds of North 

 America and their Vertebrate Fauna, E. C. Case, 219. — Mesozoic and 

 Cenozoic Echinodermata of the United States, W. B. Clark and M. W. 

 Twitchell: Upper White River District, Yukon, D. D. Cairnes: Devonian 

 of Southwestern Ontario, C. R. Staxjffer, 221. — Erosion intervals in the 

 Eocene of the Mississippi Embayment, E. W. Berry : Arisaig-Antigonish 

 District, Nova Scotia, M. Y. Williams: Stratigraphy of the Pennsylvanian 

 Series in Missouri, H. Hinds and F. C. Greene -. Fossilium Catalogus, I, 

 Animalia, Pars 9, Stegosauria. E. Hennig, 222. — Fossilium Catalogus, I, 

 Animalia, Pars 8, Cephalopoda triadica, C. Diener : Catalogue of the 

 Meteorites of North America to January 1. 1909, O. C. Farrington : 

 Gems and Precious Stones in 1914, D. B. Sterrett. 223. — Magic of Jewels 

 and Charms, G. F. Kunz : Mineral Resources of Texas, W. B. Phillips : 

 Mineral Resources of the Philippine Islands for the year 1914 : Building 

 Stones of Ohio, J. A. Bowxocker, 224. — Peat Resources of Wisconsin, 

 F. W. Huels : Purchase and Sale of Illinois Coal on Specification, S. W. 

 Parr, 225. 



Miscellaneous Scientific Intelligence — Development of the Human Body ; 

 A Manual of Human Embryology, J. P. McMurrich : National Academies 

 and the Progress of Research, G. E. Hale : Memoirs of the Queensland 

 Museum, R. Hamlyn-Harris, 225 : Edinburgh Mathematical Tracts, 226. 



Obituary — E. W. Hilgard: A. Vaugean : F. R. Barrell : H. E. Dresser: 

 C. R. Zeiller, 226. 



