﻿CONTENTS. 
  VII 
  

  

  Number 
  1 
  7. 
  

  

  Page 
  

  

  Hubert 
  Anson 
  Newton 
  ; 
  by 
  J. 
  Willard 
  Gibbs 
  _ 
  35& 
  

  

  Art. 
  XXXY. 
  — 
  Means 
  of 
  producing 
  a 
  Constant 
  Angular 
  

  

  velocity 
  ; 
  by 
  A. 
  G. 
  Webster.. 
  _ 
  379 
  

  

  XXXVI. 
  — 
  Rapid 
  Break 
  for 
  large 
  Currents; 
  by 
  A. 
  G. 
  

  

  Webster 
  383 
  

  

  XXXVII.— 
  Electrical 
  Conductivity 
  of 
  the 
  Ether; 
  by 
  J. 
  

  

  Trowbridge 
  387 
  

  

  XXXVIII.— 
  Effect 
  of 
  Great 
  Current 
  Strength 
  on 
  the 
  Con- 
  

   ductivity 
  of 
  Electrolytes; 
  by 
  T. 
  W. 
  Richards 
  and 
  

   J. 
  Trowbridge 
  .;_. 
  _ 
  391 
  

  

  XXXIX. 
  — 
  Southern 
  Devonian 
  formations; 
  by 
  H. 
  S. 
  Wil- 
  

   liams 
  393 
  

  

  XL. 
  — 
  Genus 
  Lingulepis 
  ; 
  by 
  C. 
  D. 
  Walcott 
  404 
  

  

  XLL— 
  Seiches 
  on 
  the 
  Bay 
  of 
  Fundy; 
  by 
  A. 
  W. 
  Duff 
  406 
  

  

  XLII. 
  — 
  Roeblingite, 
  a 
  new 
  Silicate 
  from 
  Franklin 
  Furnace, 
  

   N. 
  J., 
  containing 
  Sulphur 
  Dioxide 
  and 
  Lead 
  ; 
  by 
  S. 
  L. 
  

   Penfield 
  and 
  H. 
  W. 
  Foote 
  413 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics 
  — 
  Rotation 
  of 
  Circularly 
  Polarizing 
  Crystals 
  in 
  the 
  State 
  

   of 
  Powder, 
  Landolt 
  : 
  Oxidation 
  of 
  Nitrogen 
  GTas, 
  Rayleigh, 
  416. 
  — 
  Pres- 
  

   ence 
  of 
  Nitrites 
  in 
  the 
  Air, 
  Defren 
  : 
  Solubility 
  of 
  Lead 
  and 
  Bismuth 
  in 
  Zinc» 
  

   Spring 
  and 
  Romanoff, 
  418. 
  — 
  Traite 
  Elementaire 
  de 
  Mechanique 
  Chemique 
  

   fondee 
  sur 
  la 
  Thermodynamique, 
  P. 
  Duhem 
  : 
  Elements 
  of 
  Theoretical 
  Physics, 
  

   C. 
  Cheistiansen, 
  419. 
  — 
  Theory 
  of 
  Physic?, 
  J. 
  S. 
  Ames: 
  Outlines 
  of 
  Physics, 
  an 
  

   Elementary 
  Text-Book, 
  E. 
  L. 
  Nichols, 
  420. 
  

  

  Geology 
  and 
  Natural 
  History 
  — 
  Geological 
  Survey 
  of 
  Canada, 
  421. 
  — 
  Boletin 
  del 
  

   Instituto 
  Geologico 
  de 
  Mexico, 
  J. 
  G. 
  Aguilera: 
  Introduction 
  to 
  Geology, 
  W. 
  

   B. 
  Scott, 
  422. 
  — 
  Glaciers 
  of 
  North 
  America, 
  I. 
  C. 
  Russell: 
  Treatise 
  on 
  Rocks, 
  

   Rock- 
  Weathering 
  and 
  Soils, 
  G. 
  P. 
  Merrill, 
  423.— 
  Elemente 
  der 
  Mineralogie 
  

   begriindet 
  von 
  Carl 
  Friedrich 
  Naumann, 
  F. 
  Zirkel 
  : 
  Introduction 
  to 
  the 
  Study 
  

   of 
  Meteorites. 
  424. 
  — 
  Pseudomorphs 
  after 
  halite 
  from 
  Jamaica, 
  W. 
  I., 
  E. 
  0. 
  

   Hovey 
  : 
  Flora 
  of 
  the 
  Southern 
  United 
  States, 
  A. 
  W. 
  Chapman 
  : 
  Neural 
  Terms, 
  

   International 
  and 
  National, 
  B. 
  G. 
  Wilder, 
  425. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  — 
  National 
  Academy 
  of 
  Sciences: 
  Microscopic 
  

   Researches 
  on 
  the 
  Formative 
  Property 
  of 
  Glycogen, 
  C. 
  Creighton: 
  Tutorial 
  

   Statics, 
  W. 
  Briggs 
  and 
  G. 
  H. 
  Bryan: 
  Royal 
  Society 
  of 
  London, 
  426. 
  

  

  Obituary— 
  Edward 
  Drinker 
  Cope, 
  427.— 
  Matthew 
  Carey 
  Lea: 
  Joseph 
  F. 
  

   James, 
  428. 
  

  

  