﻿CONTENTS. 
  

  

  Page 
  

  

  Art. 
  XXXV. 
  — 
  Daily 
  March 
  of 
  the 
  Wind 
  Velocities 
  in 
  the 
  

  

  United 
  States 
  ; 
  by 
  F. 
  Waldo 
  431 
  

  

  XXXVI. 
  — 
  Preparation 
  of 
  Perchloric 
  Acid 
  and 
  its 
  Applica- 
  

   tion 
  to 
  the 
  Determination 
  of 
  Potassium 
  ; 
  by 
  D. 
  A. 
  

   Kreider 
  443 
  

  

  XXXVII. 
  — 
  Crystal 
  Form 
  of 
  Borneol 
  and 
  Isoborneol 
  ; 
  by 
  

  

  W. 
  H. 
  HobbS-._ 
  _- 
  __ 
  449 
  

  

  XXXVIIL— 
  Synopsis 
  of 
  the 
  Mode 
  of 
  Growth 
  and 
  Develop- 
  

   ment 
  of 
  the 
  Graptolitic 
  Genus 
  Diplograptus 
  ; 
  by 
  R. 
  

  

  RUEDEMANN 
  __ 
  453 
  

  

  XXXIX. 
  — 
  Newly 
  Discovered 
  Dike 
  at 
  DeWitt, 
  near 
  Syra- 
  

   cuse, 
  New 
  York. 
  Geologic 
  notes 
  by 
  N. 
  H. 
  Dartox. 
  

   Petrographic 
  description; 
  by 
  J. 
  F. 
  Kemp. 
  456 
  

  

  XL. 
  — 
  Note 
  on 
  the 
  amount 
  of 
  Elevation 
  which 
  has 
  taken 
  place 
  

   along 
  the 
  Rocky 
  Mountain 
  Range 
  in 
  British 
  America 
  

   since 
  the 
  close 
  of 
  the 
  Cretaceous 
  period 
  ; 
  by 
  Dr. 
  G. 
  M. 
  

   Dawson 
  463 
  

  

  XLI. 
  — 
  Three 
  New 
  Analyses 
  of 
  Sodalite, 
  from 
  three 
  new 
  

  

  localities; 
  by 
  L. 
  Mel. 
  Luquer 
  and 
  G. 
  J. 
  Volckening 
  465 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  P/i 
  ysics-^Solution 
  and 
  Pseudo-solution, 
  Linder 
  and 
  Pictox 
  : 
  

   Fluidity 
  of 
  Metals 
  below 
  their 
  Melting 
  Points, 
  Spring, 
  467. 
  — 
  Light 
  emitted 
  

   during 
  Crystallization, 
  Bandeowski 
  ; 
  Two-fold 
  Spectra 
  of 
  Oxygen, 
  Baly, 
  4fi8. 
  

   — 
  Krafte 
  der 
  Chemischen 
  Dynamik, 
  L. 
  Stettenheimer 
  : 
  Physical 
  Constants 
  of 
  

   Hydrogen, 
  Olszewski: 
  Color 
  Photography, 
  Neuhaus, 
  469. 
  — 
  Silvering 
  Glass, 
  

   M. 
  M. 
  Auguste 
  and 
  L. 
  Lumiere 
  : 
  Form 
  of 
  Sensitive 
  Galvanometer, 
  M. 
  P. 
  Weiss: 
  

   Diselectrification 
  of 
  Air, 
  Kelvin, 
  M. 
  Maclean 
  and 
  A. 
  Galt, 
  470. 
  — 
  Beitraege 
  

   zur 
  Kenntniss 
  des 
  Wesens 
  der 
  Saecular 
  Variation 
  des 
  Erdmagnetismus, 
  L. 
  A. 
  

   Bauer, 
  471.— 
  Text 
  Book 
  of 
  the 
  Principles 
  of 
  Physics, 
  A. 
  Daniell, 
  472. 
  

  

  Geology 
  and 
  Mineralogy 
  — 
  Discovery 
  of 
  a 
  dicotyledonous 
  Flora 
  in 
  the 
  Cheyenne 
  

   sandstone, 
  P. 
  T. 
  Hill: 
  Geological 
  Aspects 
  of 
  Variation, 
  M. 
  Gosselet, 
  473. 
  

   — 
  Geological 
  Survey 
  of 
  Illinois, 
  vol. 
  iv, 
  C. 
  R. 
  Ketes: 
  Geological 
  Survey 
  of 
  

   New 
  Jersey, 
  475. 
  — 
  Geological 
  Survey 
  of 
  Iowa, 
  vol. 
  iii: 
  Ueber 
  devonische 
  

   Pflanzen 
  aus 
  dem 
  Donetz-Becken, 
  Schmalhausen, 
  476. 
  — 
  Contributions 
  a 
  

   l'Etude 
  des 
  Feldspaths 
  des 
  Roches 
  Volcaniques, 
  F. 
  Fouque, 
  477. 
  — 
  Analcite- 
  

   Diabase 
  from 
  San 
  Luis, 
  Cal., 
  H. 
  W. 
  Fairbanks: 
  Gold 
  in 
  Serpentine. 
  H. 
  ^Y. 
  

   Turner: 
  Brief 
  Notices 
  of 
  some 
  recently 
  described 
  Minerals, 
  478. 
  — 
  Elements 
  of 
  

   Mineralogy, 
  Crystallography 
  and 
  Blowpipe 
  Analysis, 
  A. 
  J. 
  Moses 
  and 
  C. 
  L. 
  

   Parsons, 
  480. 
  

  

  Botany 
  — 
  Students' 
  Text-Book 
  of 
  Botany, 
  S. 
  H. 
  Vines, 
  481. 
  — 
  Cellulose: 
  an 
  out- 
  

   line 
  of 
  the 
  Chemistry 
  of 
  the 
  structural 
  elements 
  of 
  plants, 
  with 
  reference 
  to 
  

   their 
  Natural 
  History 
  and 
  Industrial 
  Uses, 
  C. 
  F. 
  Cross, 
  E. 
  J. 
  Bevan 
  and 
  C. 
  

   Beadle, 
  482. 
  — 
  Interesting 
  Method 
  of 
  Dissenjination, 
  Dusen: 
  Australian 
  Nar- 
  

   cotics, 
  J. 
  H. 
  Maiden, 
  483. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  — 
  Science 
  of 
  Mechanics, 
  E. 
  Mach: 
  Dynam- 
  

   ics 
  : 
  P. 
  T. 
  Glazebrook 
  : 
  Few 
  Chapters 
  in 
  Astronomy, 
  C. 
  Kennedy 
  : 
  North 
  

   American 
  Birds, 
  H. 
  Nehrling, 
  R. 
  Ridgway, 
  A. 
  Goering 
  and 
  G. 
  Muetzel, 
  484. 
  

  

  Obituary 
  — 
  John 
  H. 
  Redfield: 
  Lothar 
  von 
  Meyer: 
  Carl 
  Vogt, 
  485. 
  

  

  Index, 
  486. 
  

  

  