﻿CONTENTS. 
  

  

  PBge 
  

  

  Art. 
  VIII. 
  — 
  Outline 
  of 
  a 
  Natural 
  Classification 
  of 
  the 
  Trilo- 
  

  

  bites; 
  by 
  C. 
  E. 
  Beechee. 
  (With 
  Plate 
  III.) 
  89 
  

  

  IX. 
  — 
  Preliminary 
  Trial 
  of 
  an 
  Interferential 
  Induction 
  Bal- 
  

   ance; 
  by 
  C. 
  Barus 
  107 
  

  

  X. 
  — 
  The 
  Multiple 
  Spectra 
  of 
  Gases; 
  by 
  J., 
  Trowbridge 
  and 
  

  

  T. 
  W. 
  Richards 
  __ 
  117 
  

  

  XI. 
  — 
  Studies 
  in 
  the 
  Cyperaceae; 
  by 
  T. 
  Holm. 
  (With 
  Plate 
  

  

  IV.) 
  ._. 
  121 
  

  

  XII. 
  — 
  Simple 
  Instrument 
  for 
  inclining 
  a 
  Preparation 
  in 
  the 
  

  

  Mk-rocope 
  ; 
  by 
  T. 
  A. 
  Jaggar, 
  Jr 
  129 
  

  

  "XIII. 
  — 
  Nocturnal 
  protective 
  coloration 
  in 
  Mammals, 
  Birds, 
  

   Fishes, 
  Insects, 
  etc., 
  as 
  developed 
  by 
  Natural 
  Selection; 
  

   by 
  A. 
  E. 
  Vkkbill 
  132 
  

  

  XIV. 
  — 
  Nocturnal 
  and 
  diurnal 
  changes 
  in 
  the 
  colors 
  of 
  certain 
  

   fishes 
  and 
  of 
  Che 
  squid 
  (Loligo), 
  with 
  notes 
  on 
  their 
  

   sleeping 
  habits; 
  by 
  A. 
  E. 
  Verbill 
  135 
  

  

  XV. 
  — 
  The 
  Stylhiodontia, 
  a 
  Suborder 
  of 
  Eocene 
  Edentates; 
  

  

  by 
  O. 
  C.' 
  Marsh 
  137 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics— 
  Diffusion 
  of 
  Metals, 
  Roberts-Austen, 
  147. 
  — 
  Optical 
  

   Kotation 
  in 
  the 
  » 
  rystalline 
  and 
  the 
  Liquid 
  States, 
  Traubr, 
  148. 
  — 
  Electrolysis 
  of 
  

   Water, 
  Sokoloff: 
  Electrolytic 
  Production 
  of 
  Hypochlorites 
  and 
  Chlorates, 
  Oet- 
  

   tel. 
  149. 
  — 
  Action 
  of 
  Nitrous 
  acid 
  in 
  a 
  Grove 
  cell, 
  Ihle: 
  Spectra 
  of 
  Fused 
  Salts 
  

   of 
  the 
  Alkali 
  Metals, 
  DeGramont, 
  150. 
  — 
  Preparatiou 
  of 
  Lithium 
  and 
  Beryllium, 
  

   Borchers: 
  Light 
  of 
  the 
  glow 
  beetle, 
  H 
  Mukaoka, 
  151. 
  — 
  Rontgen 
  Ray?, 
  Kel- 
  

   vin: 
  Electric 
  light 
  in 
  Capillary 
  tubes. 
  0. 
  Schott: 
  Temperature 
  of 
  the 
  sun, 
  W. 
  

   E. 
  Wilson 
  and 
  P. 
  L. 
  Gray: 
  Argon 
  and 
  helium, 
  Lockyer, 
  152. 
  

  

  Geology 
  and 
  Natural 
  History 
  — 
  U. 
  S 
  Geological 
  Survey, 
  153. 
  — 
  Geological 
  

   reconnaissance 
  in 
  Northwestern 
  Oregon, 
  J. 
  S. 
  DtLLER, 
  155. 
  — 
  Underground 
  

   water 
  of 
  the 
  Arkansas 
  Valley 
  in 
  Eastern 
  Colorado, 
  G. 
  K. 
  Gilbert: 
  Geological 
  

   Society 
  of 
  America, 
  156 
  — 
  Pre-Cambrian 
  rocks 
  and 
  fossils, 
  157. 
  — 
  Antiquity 
  of 
  

   man 
  in 
  Britain 
  W. 
  J. 
  L. 
  Abbott: 
  Age 
  of 
  the 
  Lower 
  Coals 
  of 
  Missouri, 
  D. 
  

   White, 
  158 
  — 
  Relation 
  of 
  the 
  fauna 
  of 
  the 
  Ithaca 
  group 
  to 
  the 
  faunas 
  of 
  the 
  

   Portage 
  and 
  ('hemung. 
  E 
  M. 
  Kindle. 
  Phosphate- 
  Deposits 
  of 
  Arkansas, 
  J. 
  0. 
  

   Branner. 
  159. 
  — 
  Die 
  Leitfo^silien. 
  ein 
  Handbuch 
  fur 
  den 
  Unterricht 
  und 
  fur 
  

   das 
  Bestimmen 
  von 
  Yersteinerungen, 
  K. 
  Koken: 
  Ueber 
  die 
  neue 
  geologische 
  

   Uebersichtskarte 
  der 
  Schweiz. 
  C 
  Schmidt: 
  Ancient 
  volcanic 
  rocks 
  of 
  South 
  

   Mt, 
  Penn., 
  E. 
  Bascom. 
  160. 
  — 
  Geology 
  of 
  the 
  Fox 
  Islands, 
  Me., 
  G. 
  O. 
  Smith: 
  

   Cell 
  in 
  Development 
  and 
  Inheritance, 
  E. 
  B 
  Wilson, 
  161. 
  — 
  Tables 
  for 
  the 
  Deter- 
  

   mination 
  of 
  Minerals 
  by 
  Physical 
  Properties, 
  ascertainable 
  with 
  the 
  aid 
  of 
  a 
  

   few 
  Field 
  Instruments. 
  P. 
  Fr<\zer: 
  Der 
  Lichtsinn 
  augenloser 
  Tiere, 
  W. 
  A. 
  

   Nagel: 
  -Additional 
  information 
  concerning 
  the 
  giant 
  Cephalopod 
  of 
  Florida, 
  

   A. 
  E. 
  Verrill, 
  162. 
  

  

  Obituary 
  — 
  Gen. 
  Francis 
  A. 
  Walker, 
  164. 
  

  

  