﻿CONTENTS. 
  

  

  Page 
  

  

  Art. 
  XV. 
  — 
  Hot 
  Water 
  and 
  Soft 
  Glass 
  in 
  their 
  Thermody- 
  

   namic 
  Relations; 
  by 
  C. 
  Barus._ 
  161 
  

  

  XVI. 
  — 
  Conrad's 
  Types 
  of 
  Syrian 
  Fossils 
  ; 
  by 
  C. 
  E. 
  Beecher 
  176 
  

  

  XVII.— 
  Electrical 
  Thermostat; 
  by 
  W. 
  Duane 
  and 
  C. 
  A. 
  

  

  Lory 
  179 
  

  

  XVIII. 
  — 
  Toxic 
  Action 
  of 
  a 
  Series 
  of 
  Acids 
  and 
  of 
  their 
  

  

  Sodium 
  Salts 
  on 
  Lnpinus 
  Albus 
  ; 
  by 
  R. 
  H. 
  True 
  183 
  

  

  XIX. 
  — 
  Explorations 
  of 
  the 
  u 
  Albatross 
  " 
  in 
  the 
  Pacific 
  ; 
  by 
  

  

  A. 
  Agassiz 
  _ 
  _ 
  _ 
  _ 
  193 
  

  

  XX. 
  — 
  iEgirite 
  Granite 
  from 
  Miask, 
  Ural 
  Mts.; 
  by 
  L. 
  V. 
  

  

  Pirsson 
  _ 
  199 
  

  

  XXL— 
  Illinois 
  Gulch 
  Meteorite; 
  by 
  H. 
  L. 
  Preston 
  201 
  

  

  XXII. 
  — 
  Silurian-Devonian 
  boundary 
  in 
  North 
  America; 
  by 
  

  

  H. 
  S. 
  Williams 
  ' 
  203 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Physics 
  — 
  Observations 
  from 
  the 
  Astrophysical 
  Observatory 
  connected 
  with 
  the 
  

   Smithsonian 
  Institution 
  at 
  Washington, 
  C. 
  G. 
  Abbot, 
  214. 
  — 
  Electro-Chem- 
  

   ical 
  Equivalents 
  of 
  Copper 
  and 
  Silver, 
  T. 
  W. 
  Richards, 
  E. 
  Collins 
  and 
  G. 
  W. 
  

   Heimrod, 
  218. 
  — 
  Irreversible 
  Radiation 
  Phenomena, 
  M. 
  Planck, 
  219. 
  — 
  Radio- 
  

   active 
  Substance 
  emitted 
  from 
  Thorium 
  compounds, 
  Rutherford 
  : 
  Nature 
  of 
  

   White 
  Light, 
  E. 
  Carvallo: 
  New 
  Electrical 
  Condenser, 
  Bradley, 
  220. 
  — 
  

   Kinetic 
  Theory 
  of 
  Gases, 
  0. 
  E. 
  Meyer: 
  Rise 
  and 
  Development 
  of 
  the 
  Lique- 
  

   faction 
  of 
  Gases, 
  W. 
  L. 
  Hardin: 
  Introduction 
  to 
  the 
  Study 
  of 
  Central 
  Station 
  

   Electricity 
  Supply, 
  A. 
  Gay 
  and 
  C. 
  H. 
  Yeaman, 
  221. 
  — 
  Annalen 
  der 
  Physik, 
  222. 
  

  

  Geology 
  and 
  Mineralogy 
  — 
  Geology 
  and 
  Physical 
  Geography 
  of 
  Jamaica, 
  R. 
  T. 
  Hill, 
  

   222. 
  — 
  Maryland 
  Geological 
  Survey, 
  W. 
  B. 
  Clark. 
  223. 
  — 
  Memoir 
  on 
  the 
  Paleo- 
  

   zoic 
  Reticulate 
  Sponges 
  constituting 
  the 
  family 
  Dictyospongidae, 
  J. 
  Hall 
  and 
  

   J. 
  M. 
  Clarke, 
  224. 
  — 
  International 
  Congress 
  of 
  Geology: 
  Beitrage 
  zur 
  Geologie 
  

   und 
  Petrographie 
  Chile's, 
  F. 
  von 
  Wolfe, 
  228. 
  — 
  Repertorium 
  der 
  mineralo- 
  

   gischen 
  und 
  krystallographischen 
  Literatur, 
  E. 
  Weinschenk 
  and 
  F. 
  Grunling: 
  

   Handbuch 
  der 
  Mineralogie, 
  C. 
  Hintze: 
  Tabellen 
  zur 
  mikroskopischen 
  Bestim- 
  

   mung 
  der 
  Mineralien 
  nach 
  ihrem 
  Brechungsindex, 
  J. 
  L. 
  C. 
  Schroeder 
  van 
  

   der 
  Kolk, 
  229. 
  

  

  Botany 
  — 
  Beitrage 
  zur 
  Physiologie 
  der 
  Wurzeln, 
  A. 
  Rimbach, 
  230. 
  — 
  Keimung 
  der 
  

   Samen 
  von 
  Anemone 
  apennina, 
  F. 
  Hildebrand: 
  Carex-vegetation 
  des 
  Ausser- 
  

   tropischen 
  Siidamerika, 
  G. 
  Kukenthal, 
  231. 
  — 
  List 
  of 
  the 
  plants 
  of 
  the 
  Pribiloff 
  

   Islands 
  with 
  notes 
  on 
  their 
  distribution, 
  J. 
  M. 
  Macoun, 
  232. 
  — 
  Missouri 
  Botan- 
  

   ical 
  Garden, 
  233. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  — 
  Report 
  of 
  S. 
  P. 
  Langley, 
  Secretary 
  of 
  the 
  

   Smithsonian 
  Institution, 
  ending 
  June 
  30, 
  1899: 
  Report 
  of 
  the 
  United 
  States 
  

   National 
  Museum, 
  233. 
  — 
  Maryland 
  Weather 
  Service, 
  W. 
  B. 
  Clark: 
  Interna- 
  

   tional 
  Monthly: 
  Histoire 
  des 
  Mathematiques, 
  J. 
  Boyer, 
  234. 
  — 
  Earth 
  Measured: 
  

   Leitfaden 
  fiir 
  den 
  Unterricht 
  in 
  der 
  anorganischen 
  Chemie 
  : 
  ""Tension 
  de 
  disso- 
  

   ■ 
  ciation 
  avant 
  H. 
  Sainte 
  Claire 
  Deville, 
  235. 
  

  

  Obituary— 
  Henry 
  Allen 
  Hazen, 
  235. 
  — 
  Hanns 
  Bruno 
  Geinitz 
  : 
  David 
  E. 
  

   Hughes, 
  236. 
  

  

  