﻿INDEX 
  TO 
  VOLUME 
  XLIX.* 
  

  

  Academy, 
  National, 
  meeting 
  at 
  

  

  Washington, 
  387, 
  453. 
  

   Acoustics, 
  lecture 
  experiments, 
  

  

  Kayser, 
  446. 
  

   Air 
  Propeller, 
  Bedell, 
  216. 
  

   Alberta, 
  Geology, 
  Stewart, 
  83. 
  

   Andros, 
  S. 
  O., 
  Petroleum 
  Hand- 
  

   book, 
  214. 
  

   Animal 
  Life, 
  Thompson, 
  220. 
  

   Appalachian, 
  Piedmont 
  terraces, 
  

  

  Barrell, 
  227, 
  327, 
  407. 
  

   Arc 
  lamp, 
  cadmium 
  vapor, 
  Bates, 
  

  

  378. 
  

   Arctic 
  paleogeography, 
  Holtedahl, 
  

  

  1, 
  3o8. 
  

   Association, 
  American, 
  meeting 
  at 
  

  

  St. 
  Louis, 
  86. 
  

   Atomic 
  Weights, 
  1919-20, 
  report 
  of 
  

  

  International 
  Committee, 
  78. 
  

   Australia, 
  marine 
  fiber, 
  310. 
  

   Azeotropism, 
  Lecat, 
  217. 
  

  

  B 
  

  

  Baker, 
  C. 
  L., 
  stratigraphy 
  of 
  East- 
  

   ern 
  New 
  Mexico, 
  99. 
  

  

  Barnett, 
  E. 
  DeB., 
  Preparation 
  of 
  

   Organic 
  Compounds, 
  300. 
  

  

  Barrell, 
  J., 
  Piedmont 
  terraces 
  of 
  

   the 
  Northern 
  Appalachians, 
  227, 
  

  

  327, 
  407. 
  

   Bedell, 
  F., 
  Air 
  Propeller, 
  216. 
  

   Berry, 
  E. 
  W., 
  evolution 
  of 
  plants 
  

  

  and 
  animals, 
  207. 
  

   Biology, 
  Manual, 
  Gruenberg, 
  84. 
  

   Bishop 
  Museum, 
  Hawaii, 
  Memoirs. 
  

  

  156. 
  

   Book 
  Review 
  Index, 
  Technical, 
  226. 
  

   Bose, 
  E., 
  ammonoids 
  from 
  New 
  

  

  Mexico, 
  26. 
  

   Bosworth, 
  T. 
  O., 
  Mid-Continent 
  Oil 
  

  

  Fields, 
  450. 
  

  

  BOTANY. 
  

  

  Cactaceae, 
  Britton 
  and 
  Rose, 
  222. 
  

   Cyperacese, 
  studies, 
  Holm, 
  

  

  XXVIII, 
  195; 
  XXIX, 
  429. 
  

   Fossil, 
  Guppy, 
  372. 
  

   Posidonia 
  australis, 
  310. 
  

   Plants, 
  fossil, 
  Knowlton, 
  189, 
  307; 
  

  

  Seward, 
  223. 
  

   Branner, 
  J. 
  C, 
  geology 
  of 
  Brazil, 
  

  

  Branson, 
  E. 
  B., 
  geologic 
  section 
  in 
  

   Missouri, 
  267. 
  

  

  * 
  This 
  Index 
  contains 
  the 
  general 
  heads, 
  

   Obituary; 
  under 
  each 
  the 
  titles 
  of 
  Articles 
  

  

  Brazil, 
  Geology, 
  Branner, 
  151. 
  

  

  British 
  Museum 
  of 
  Natural 
  His- 
  

   tory, 
  publications, 
  388. 
  

  

  Britton, 
  N. 
  L., 
  Cactaceae, 
  222. 
  

  

  Buchanan, 
  J. 
  Y., 
  Oceanography, 
  

   etc., 
  217. 
  

  

  Butler 
  salt 
  dome, 
  Powers, 
  129. 
  

  

  Cadmium 
  vapor 
  arc 
  lamp, 
  Bates, 
  

  

  3/8. 
  

   Carnegie 
  Foundation, 
  report, 
  386. 
  

  

  — 
  Institution, 
  publications, 
  224, 
  

   387; 
  Year 
  Book, 
  No. 
  18, 
  454. 
  

  

  Chamberlin, 
  T. 
  C, 
  mathematics 
  of 
  

  

  isostasy, 
  311. 
  

   Chemie, 
  Histoire, 
  Delacre, 
  443. 
  

   Chemistry, 
  Noyes, 
  444. 
  

  

  — 
  Physical, 
  van 
  Klooster, 
  147. 
  

  

  — 
  Practical, 
  Neville 
  and 
  Newman, 
  

   '376. 
  

  

  CHEMISTRY. 
  

  

  Alloys, 
  reactive, 
  Ashcroft, 
  299. 
  

   Atomic 
  weights 
  as 
  integers 
  when 
  

  

  O 
  = 
  16, 
  212. 
  

   Boric 
  acid 
  in 
  determination 
  of 
  

  

  ammonia, 
  Scales 
  and 
  Harrison, 
  

  

  443- 
  

   Carbon, 
  activation, 
  Chaney, 
  212. 
  

   Cupferron 
  in 
  analysis, 
  Lundell 
  

  

  and 
  Knowles, 
  376. 
  

   Gallium, 
  separation, 
  Porter 
  and 
  

  

  Browning, 
  213. 
  

   Indicator 
  for 
  bases 
  and 
  acids, 
  

  

  Chauvierre, 
  299. 
  

   Iron, 
  rotating 
  reductors 
  in 
  the 
  

  

  determination, 
  Scott, 
  77. 
  

   Organic 
  Compounds, 
  Barnett, 
  

  

  300. 
  

   Photographic 
  phenomenon, 
  Mc- 
  

  

  Arthur 
  and 
  Stewart, 
  146. 
  

   Platinum 
  wire 
  in 
  bead 
  and 
  flame 
  

  

  tests, 
  Kiplinger, 
  449. 
  

   Potassium 
  nitrate, 
  Chile, 
  Hol- 
  

  

  stein, 
  298. 
  

   Rare 
  Earths, 
  Spencer, 
  78. 
  

   Solubilities 
  of 
  Inorganic 
  and 
  Or- 
  

   ganic 
  Compounds, 
  Seidell, 
  78. 
  

   Tin, 
  hydride, 
  Peneth 
  and 
  Furth, 
  

  

  298. 
  

   Uranium, 
  Chemistry, 
  Pierle, 
  146. 
  

   Weighing, 
  analytical, 
  Wells, 
  375. 
  

   Climatic 
  Control, 
  Humphreys, 
  305. 
  

   Coast 
  Survey, 
  U. 
  S., 
  report, 
  309. 
  

  

  Botany, 
  Chemistry, 
  Geology, 
  Minerals, 
  

   referring 
  thereto 
  are 
  included. 
  

  

  