﻿CONTENTS. 
  

  

  Page 
  

  

  Art. 
  I. 
  — 
  Velocity 
  of 
  Electric 
  \yaves 
  in 
  Air; 
  by 
  G. 
  V. 
  

  

  Maclean. 
  (With 
  Plate 
  I) 
  1 
  

  

  II. 
  — 
  Spiral 
  Fulgurite 
  from 
  Wisconsin 
  ; 
  by 
  W. 
  H. 
  Hobbs 
  17 
  

  

  III. 
  — 
  Chemical 
  Composition 
  of 
  Parisite 
  and 
  a 
  new 
  occurrence 
  

  

  of 
  it 
  in 
  Ravalli 
  Co., 
  Montana; 
  by 
  S. 
  L. 
  Penfield 
  and 
  

  

  C. 
  11. 
  Warren 
  _ 
  L 
  21 
  

  

  IV. 
  — 
  Estimation 
  of 
  Iron 
  in 
  the 
  Ferric 
  State 
  by 
  Reduction 
  

  

  with 
  Sodium 
  Thiosulphate 
  and 
  Titration 
  with 
  Iodine; 
  

  

  by 
  J. 
  T. 
  Norton, 
  Jr 
  25 
  

  

  V. 
  — 
  Mouth 
  of 
  Grand 
  River 
  ; 
  by 
  E. 
  H. 
  Mudge 
  31 
  

  

  VI. 
  — 
  Electrical 
  Measurements 
  ; 
  by 
  H. 
  A. 
  Rowland 
  and 
  T. 
  D. 
  

  

  Penniman 
  _ 
  36 
  

  

  VII. 
  — 
  Reflection 
  of 
  Hertzian 
  Waves 
  at 
  the 
  Ends 
  of 
  Parallel 
  

  

  Wires 
  ; 
  by 
  Lee 
  D 
  eForest 
  58 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics 
  — 
  Peroxides, 
  Melikoff 
  and 
  Pissarjewskt 
  : 
  Preparation 
  

   of 
  Iron 
  Silicide, 
  Lebeau, 
  72. 
  — 
  Application 
  of 
  the 
  Equilibrium 
  Law 
  to 
  the 
  For- 
  

   mation 
  of 
  Oceanic 
  Salt 
  Deposits, 
  Van't 
  Hoff 
  and 
  Meyer 
  hoffer: 
  Spirit 
  of 
  

   Organic 
  Chemistry, 
  an 
  Introduction 
  to 
  the 
  Current 
  Literature 
  of 
  the 
  Subject, 
  

   A. 
  Lachman, 
  73. 
  — 
  Lehrbuch 
  der 
  Allgemeinen 
  Chemie, 
  W. 
  Ostwald: 
  Insula- 
  

   tors 
  for 
  Heat: 
  Optical 
  relations 
  of 
  Gold 
  and 
  Platiuum 
  laj^ers, 
  G. 
  Breitiiacpt, 
  

   74, 
  — 
  Electrical 
  "Waves, 
  A. 
  Neugsciiwender 
  : 
  Ether 
  Movements, 
  G. 
  Mil: 
  Ver- 
  

   handlungen 
  der 
  Deutschen 
  Physikalischen 
  Gesellschaft, 
  7 
  5. 
  

  

  Geology 
  and 
  Mineralogy— 
  Umted 
  States 
  Geological 
  Survey, 
  ?2ighteenlh 
  Annual 
  

   Report, 
  1896-97, 
  75. 
  — 
  Nineteenth 
  Annual 
  Report 
  of 
  the 
  Director 
  of 
  the 
  

   United 
  States 
  Geological 
  Survey, 
  1897-98, 
  C. 
  D. 
  Walcott, 
  76.— 
  Pre-Cambrian 
  

   Fossiliferous 
  Formation, 
  C, 
  D, 
  Walcott, 
  78. 
  — 
  Pal{\?ozoic 
  Terrane 
  beneath 
  the 
  

   Cambrian, 
  G. 
  V. 
  Matthew, 
  79. 
  — 
  Islands 
  aud 
  Coral 
  Reefs 
  of 
  Fiji, 
  A. 
  Agassiz: 
  

   Expermientale 
  Untersuchungen 
  ueber 
  die 
  Bildung 
  der 
  Minerale 
  im 
  Magma. 
  J. 
  

   MoROZEWicz 
  80, 
  — 
  Kyshtymite 
  and 
  Corundum-Syenite, 
  Morozewicz: 
  Gabbro 
  

   du 
  Pallet 
  et 
  ses 
  Modificaiious. 
  A. 
  Lacroix: 
  Steinbruchindustrie 
  ,und 
  Stein- 
  

   bruchgeologie, 
  0. 
  Herrmann, 
  81. 
  — 
  Studies 
  in 
  the 
  Amphiboles 
  and 
  Pyroxenes, 
  

   R. 
  A.Daly: 
  Brief 
  Notices 
  of 
  Some 
  Recently 
  Described 
  Minerals, 
  82. 
  — 
  Char- 
  

   acters 
  of 
  Crystals 
  ; 
  an 
  Introduction 
  to 
  Ph3^sical 
  Crystallography, 
  A. 
  J. 
  Moses, 
  84. 
  

  

  Botany 
  — 
  Variation 
  under 
  grafting, 
  aud 
  the 
  heredity 
  of 
  acquired 
  characiero, 
  L. 
  

   Daniel, 
  84. 
  — 
  Researches 
  concerning 
  certain 
  features 
  in 
  the 
  appropriation 
  of 
  

   nitrogen 
  by 
  plants, 
  L. 
  Lutz, 
  85. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  — 
  American 
  Association 
  for 
  the 
  Advancement 
  

   of 
  Science: 
  Scientia, 
  86. 
  — 
  Anuals 
  of 
  the 
  Astronomical 
  Observatory 
  of 
  Howard 
  

   College, 
  S. 
  I. 
  Bailey 
  : 
  Report 
  of 
  the 
  Superintendent 
  of 
  the 
  United 
  States 
  Coast 
  

   and 
  Geodetic 
  Survey, 
  showing 
  the 
  progress 
  for 
  the 
  year 
  ending 
  June, 
  1897 
  : 
  

   Catalogue 
  of 
  2,030 
  Stars 
  rfor 
  the 
  epoch 
  1895, 
  with 
  an 
  Appendix 
  giving 
  the 
  

   derivation 
  of 
  proper 
  motion 
  for 
  971 
  Stars, 
  J. 
  G. 
  Porter: 
  Stars 
  and 
  Telescopes, 
  

   1). 
  P. 
  Todd, 
  87. 
  — 
  Elements 
  of 
  Practical 
  Astronomy. 
  ^Y. 
  W. 
  Campbell: 
  Intro- 
  

   duction 
  to 
  the 
  Mathematical 
  Theory 
  of 
  Attraction, 
  F. 
  A, 
  Tarleton: 
  Variations 
  

   de 
  Longueur 
  des 
  Glaciers 
  dans 
  les 
  Regions 
  Arciiques 
  et 
  Boreales, 
  C. 
  Rarot: 
  

   Odonata 
  of 
  Ohio, 
  D. 
  S. 
  KEr.LiroTT: 
  Electricity 
  in 
  Town 
  and 
  Country 
  Houses, 
  

   P. 
  E. 
  SCRUTTON, 
  88. 
  

  

  