﻿VI 
  CONTENTS. 
  

  

  Number 
  52. 
  

  

  Page 
  

   Art. 
  XXIII. 
  — 
  Skull, 
  Pelvis 
  and 
  Probable 
  Relationships 
  of 
  

  

  the 
  Huge 
  Turtles 
  of 
  the 
  Genus 
  Archelon 
  from 
  the 
  Fort 
  

  

  Pierre 
  Cretaceous 
  of 
  South 
  Dakota 
  ; 
  by 
  G. 
  R. 
  Wieland. 
  

  

  (With 
  Plate 
  II) 
  I 
  237 
  

  

  XXIV. 
  — 
  Application 
  of 
  the 
  Radio-Micrometer 
  to 
  the 
  Meas- 
  

   urement 
  of 
  Short 
  Electric 
  Waves 
  ; 
  by 
  G. 
  W. 
  Pierce. 
  .. 
  252 
  

  

  XXV. 
  — 
  Some 
  remarks 
  on 
  the 
  latest 
  publications 
  of 
  Fl. 
  

  

  Ameghino 
  ; 
  by 
  Santiago 
  Roth 
  (Museo 
  de 
  la 
  Plata) 
  261 
  

  

  XXVI. 
  — 
  Large 
  slab 
  of 
  Uintacrinus 
  from 
  Kansas 
  ; 
  by 
  C. 
  E. 
  

  

  Beecher. 
  ( 
  With 
  Plates 
  III 
  and 
  IV).. 
  _ 
  267 
  

  

  XXVII. 
  — 
  Granodiorite 
  and 
  other 
  intermediate 
  rocks 
  ; 
  by 
  

  

  W. 
  Lindgren 
  269 
  

  

  XXVIII. 
  —Two 
  new 
  American 
  Meteorites 
  ; 
  by 
  H. 
  L. 
  Preston 
  283 
  

  

  XXIX. 
  — 
  Best 
  Form 
  for 
  the 
  Double 
  Achromatic 
  Objectives 
  

  

  of 
  Telescopes 
  ; 
  by 
  W. 
  Harkness 
  .... 
  287 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics 
  — 
  Passage 
  of 
  Argon 
  through 
  thin 
  Films 
  of 
  India-rubber, 
  

   Rayleigh, 
  292. 
  — 
  Influence 
  of 
  Water 
  on 
  the 
  Combustion 
  of 
  Carbon 
  Monoxide, 
  

   G. 
  Martin 
  : 
  Combination 
  of 
  sulphur 
  dioxide 
  with 
  oxygen, 
  E. 
  J. 
  Russell 
  and 
  

   N. 
  Smith: 
  Determination 
  of 
  Radicles 
  in 
  Carbon 
  Compounds, 
  H. 
  Meyer, 
  293. 
  — 
  

   Reflective 
  power 
  of 
  metals 
  and 
  metallic 
  deposits 
  on 
  glass 
  surfaces, 
  E. 
  Hagen 
  

   and 
  E. 
  Rubens: 
  Vacuum 
  Electroscope, 
  H. 
  Pflaum: 
  Rapid 
  spark 
  discharges, 
  

   H. 
  T. 
  Simon: 
  Discharge 
  of 
  Electricity 
  through 
  Argon 
  and 
  Helium, 
  R. 
  J. 
  

   Strutt, 
  294. 
  — 
  Experimental 
  Research 
  on 
  Some 
  Standards 
  of 
  Light, 
  J. 
  E. 
  

   Petavel, 
  295.— 
  Text-Book 
  of 
  Physics, 
  W. 
  Watson, 
  296. 
  

  

  Geology 
  and 
  Mineralogy 
  — 
  Geology 
  of 
  the 
  Yellowstone 
  National 
  Park, 
  297. 
  — 
  

   Silurian 
  Rocks 
  of 
  Britain, 
  300. 
  — 
  Lower 
  Cambrian 
  Terrace 
  in 
  the 
  Atlantic 
  Pro- 
  

   vince. 
  C. 
  D. 
  Walcott: 
  Geological 
  Survey 
  of 
  Canada, 
  G. 
  M. 
  Dawson, 
  302. 
  — 
  

   Das 
  geotektonische 
  Problem 
  der 
  Glarner 
  Alpen, 
  A. 
  Rothpletz 
  : 
  Ore 
  Deposits 
  

   of 
  the 
  United 
  States 
  and 
  Canada, 
  J. 
  F. 
  Kemp, 
  303. 
  — 
  Ward-Coonley 
  Collection 
  

   of 
  Meteorites, 
  304. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence— 
  Earthquakes 
  in 
  Japan, 
  Omori: 
  Propagation 
  

   of 
  Earthquake 
  Motion 
  to 
  great 
  Distances, 
  R. 
  D. 
  Oldham, 
  305. 
  — 
  Earthquake 
  

   Sounds, 
  C 
  Davison, 
  307. 
  — 
  Origin 
  of 
  Gulf 
  Stream 
  water. 
  P. 
  T. 
  Cleve, 
  310.— 
  

   Annals 
  of 
  the 
  Astronomical 
  Observatory 
  of 
  Harvard 
  College, 
  E. 
  C. 
  Pickering 
  : 
  

   Publications 
  of 
  the 
  Yerkes 
  Observatory, 
  University 
  of 
  Chicago, 
  S. 
  W. 
  Burn- 
  

   ham, 
  311. 
  — 
  La 
  Geographie, 
  Bulletin 
  de 
  la 
  Societe 
  de 
  Geographie 
  : 
  Biological 
  

   Laboratory 
  of 
  the 
  Brooklyn 
  Institute 
  of 
  Arts 
  and 
  Sciences 
  : 
  Royal 
  Academy 
  of 
  

   Sciences 
  at 
  Berlin. 
  

  

  