﻿CONTENTS. 
  Vll 
  

  

  Number 
  281. 
  

  

  Page 
  

  

  Art. 
  XX. 
  — 
  The 
  Hydrated 
  Ferric 
  Oxides; 
  by 
  E. 
  Posnjak 
  

  

  and 
  H. 
  E. 
  Merwin 
  311 
  

  

  Art. 
  XXI. 
  — 
  Brecciation 
  in 
  the 
  Niagara 
  Limestone 
  at 
  Roch- 
  

   ester, 
  New 
  York; 
  by 
  A. 
  W. 
  Giles 
  349 
  

  

  Art. 
  XXII. 
  — 
  Fossil 
  Beetles 
  from 
  Vero, 
  Florida; 
  by 
  H. 
  F. 
  

  

  Wickham 
  355 
  

  

  Art. 
  XXIII. 
  — 
  Literature 
  Relating 
  to 
  Human 
  Remains 
  and 
  

  

  Artifacts 
  at 
  Vero, 
  Florida; 
  by 
  E. 
  H. 
  Sellards. 
  358 
  

  

  Art. 
  XXIV. 
  — 
  On 
  the 
  Relative 
  Ages 
  of 
  certain 
  Pleistocene 
  

  

  Deposits; 
  by 
  O. 
  P. 
  Hay 
  361 
  

  

  Art. 
  XXV. 
  — 
  Some 
  Fossil 
  Parasitic 
  Hymenoptera; 
  by 
  T. 
  D. 
  

  

  A. 
  COCKERELL 
  376 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics— 
  Note 
  on 
  the 
  Preparation 
  of 
  Glycerine 
  by 
  Fermentation, 
  

   K. 
  Schweizer, 
  381. 
  — 
  The 
  Determination 
  of 
  Nitrous 
  Acid 
  and 
  Nitrites, 
  J. 
  

   S. 
  Laird 
  and 
  T. 
  C. 
  Simpson 
  : 
  The 
  Natural 
  Organic 
  Colouring 
  Matters, 
  

   A. 
  G. 
  Perkins 
  and 
  A. 
  E. 
  Everest, 
  382. 
  — 
  Chemistry 
  in 
  Old 
  Philadelphia, 
  

   E. 
  F. 
  Smith: 
  Forms 
  Assumed 
  by 
  Drops 
  and 
  Vortices, 
  E. 
  Hatschek. 
  383 
  — 
  

   Electrical 
  Eesolution 
  and 
  Broadening 
  of 
  Helium 
  Lines, 
  T. 
  E. 
  Merton, 
  

   385.— 
  From 
  Nebula 
  to 
  Nebula 
  (Fourth 
  Edition), 
  G. 
  H. 
  Lepper, 
  386.— 
  

   Elements 
  of 
  Astronomy 
  (Revised 
  Edition), 
  C. 
  A. 
  Young, 
  387. 
  

  

  Geology 
  — 
  Notes 
  on 
  the 
  Geology 
  of 
  the 
  Glass 
  Mountains, 
  J. 
  A. 
  Udden 
  and 
  

   Geologic 
  Exploration 
  of 
  tho 
  Southeastern 
  Front 
  Eange 
  of 
  Trans-Pecos, 
  

   Texas, 
  C. 
  L. 
  Baker 
  and 
  W. 
  F. 
  Bowman 
  : 
  Geological 
  Observations 
  in 
  Fiji, 
  

   W. 
  G. 
  Foye, 
  387.— 
  The 
  Metamorphic 
  Eocks 
  of 
  Adelie 
  Land. 
  F. 
  L. 
  Still- 
  

   well 
  : 
  The 
  Factors 
  Influencing 
  Gold 
  Deposition 
  in 
  the 
  Bendigo 
  Goldfield, 
  

   Part 
  II, 
  F. 
  L. 
  Stillwell, 
  388. 
  — 
  The 
  Geological 
  Eesults 
  of 
  an 
  Expedition 
  

   to 
  South 
  Australian 
  Border, 
  and 
  Some 
  Comparisons 
  between 
  Central 
  and 
  

   Western 
  Australian 
  Geology 
  Suggested 
  Thereby. 
  H. 
  W. 
  B. 
  Talbot 
  and 
  

   E. 
  deC. 
  Clarke 
  : 
  The 
  Geology 
  of 
  South 
  Australia, 
  W. 
  Howchin, 
  389. 
  — 
  

   Eighth 
  Biennial 
  Report 
  of 
  the 
  Commissioners 
  of 
  the 
  Geological 
  and 
  

   Natural 
  History 
  Survey 
  of 
  Connecticut, 
  1917-1918, 
  H. 
  E. 
  Gregory, 
  390. 
  

  

  Obituary— 
  W. 
  Watson 
  : 
  L. 
  Sylow 
  : 
  W. 
  C. 
  W. 
  Sabine 
  : 
  H. 
  H. 
  Smith 
  : 
  G. 
  F. 
  

   Becker, 
  390. 
  

  

  