INDEX TO VOLUMES I-X. Price One Dollar. 



Now ready. Orders should be given at once, as the edition is limited. 



CONTENTS. 



Pa^e- 



Art. XIII. — Circular Magnetization and Magnetic Permea- 

 bility; by J. Trowbridge and E. P. Adams 175 



XIV.— Notes on the Geology of Parts of the Seminole, 



Creek, Cherokee and Osage Nations ; by C. N. Gould 185 



XV. — Names for the formations of the Ohio Coal-measures ; 



by C. S. Prosser _._ 191 



XVI. — New American Species of Amphicyon ; by J. L. 



WORTMAN 200 



XVII.— Studies in the Cyperacea?, No. XV ; by T. Holm . _ 205 



XVIII. — Just Intonation Piano; by S. A. Hageman _ 224 



XIX. — Very on Atmospheric Radiation; by W. Hallock . 230 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Radio-active Lead, Hoffmann and Strauss: Physiolog- 

 ical Action of Radium Rays, Walkiioff: Chlorine, Heptoxide, Michael and 

 >Conn, 235. — Non-Existence of Trivalent Carbon, J. F. Norris: Diffusion of 

 Gold in Solid Lead at Ordinary Temperature, W. C. Roberts- Austin: Cerium, 

 G. B. Drossbach: Method for Crystallizing Substances without the Formation 

 of Crusts upon the Surface of the Liquid, A. Wroblewski, 236. — Velocity of 

 the ionized phosphorus emanation in the absence of electric field, C. Barus: 

 Thermochemistry of the alloys of copper and zinc, T. J. Baker, 237. — Decre- 

 ment of electrical oscillations in charging condensers, A. F. Sundell and Hj. 

 Tallquist : Effect of a magnetic field on the discharges through a gas, R. S. 

 Willons: Conductivity produced in gases by the motion of negatively charged 

 ions, Townsend, 238. — Recueil de Donnees Numeriques publie par la Societe 

 Franchise de Physique, H. Dufet: One Thousand Problems in Physics, W. H. 

 Snyder and I. 0. Palmer, 239. 



Geology and Mineralogy — Maryland Geological Survey: Allegheny County, W. B 

 Clark: U. S. Geologial Survey, C. D. Walcott, 240. — Geological Survey of 

 Michigan. A. C. Lane, 241. — Geological and Natural History Survey of Minne- 

 sota, N. H. "Winchell: Pleistocene Geology of the South Central Sierra Nevada 

 with especial reference to tbe Origin of Yosemite Valley, H. W. Turner, 242. 

 — Geologisches Centralblatt: Metasomatic Processes in Fissure Veins. W. Lind- 

 gren, 243. — Some Iowa Dolomites, N. Knight, 244. — Minerals of Ontario: 

 Text-book of Important Minerals and Rocks, with tables on the determination 

 of minerals, S. E. Tillman : Los Minerales, G. Bodenbender, 246. 



Botany — Monograph of the North American Umbelliferse, J. M. Coulter and J. 

 IS T . Rose, 247. — Foundations of Botany, J. Y. Bergen, 248.— Flora of Vermont: 

 Catalogue of the African Plants collected by Dr. Friedrich Welwitschin 1853-61. 

 W. P. Hiern, 249. — Botany: an Elementary Text for Schools, L. H. Bailey: 

 Plant Life and Structure, E. Dennert, 250. 



Miscellaneous Scientific Intelligence — Comparative Physiology of the Brain and 

 Comparative Psychology, J. Loeb: Microbes et Distillerie, L. Levy: Gesang 

 der Vogel, seine anatomischen und biologischen Grundlagen, V. Hacker, 251. 

 — O. S. U. Naturalist: Ostwald's Klassiker der Exakten Wissenschaften : 

 Director-General of the Geological Survey of the United Kingdom, 252. 



