﻿Geology 
  and 
  Natural 
  History. 
  77 
  

  

  explanation 
  is 
  that 
  a 
  certain 
  percentage 
  of 
  water 
  molecules 
  have 
  

   formed 
  complexes 
  or 
  " 
  hydrates 
  " 
  with 
  the 
  dissolved 
  salt 
  and 
  that 
  

   only 
  the 
  remaining 
  water 
  molecules 
  are 
  free 
  to 
  absorb 
  as 
  they 
  

   would 
  do 
  if 
  no 
  dissolved 
  substance 
  were 
  present. 
  There 
  are, 
  of 
  

   course, 
  other 
  ways 
  of 
  explaining 
  the 
  important 
  fact 
  mentioned 
  

   above. 
  — 
  Amer. 
  Chem. 
  Jour., 
  vol. 
  xlix, 
  April, 
  1913, 
  p. 
  265. 
  

  

  h. 
  s. 
  IT. 
  

  

  II. 
  Geology 
  and 
  Natural 
  History. 
  

  

  1. 
  United 
  States 
  Geological 
  Survey 
  ; 
  George 
  Otis 
  Smith, 
  

   Director. 
  — 
  Recent 
  publications 
  of 
  the 
  Geological 
  Survey 
  are 
  

   noted 
  in 
  the 
  following 
  list 
  (continued 
  from 
  vol. 
  xxxv, 
  p. 
  329) 
  : 
  

  

  Topographic 
  Atlas. 
  — 
  Fifty-nine 
  sheets, 
  including 
  a 
  large, 
  map 
  

   of 
  the 
  island 
  of 
  Kauai, 
  Hawaii. 
  

  

  Folios. 
  — 
  No. 
  184. 
  Kenova 
  Folio 
  : 
  Kentucky- 
  West 
  Virginia- 
  

   Ohio 
  ; 
  by 
  W. 
  C. 
  Phalen. 
  Pp. 
  16 
  ; 
  13 
  figs., 
  one 
  chart, 
  3 
  maps. 
  

  

  No. 
  186. 
  Apishapa 
  Folio 
  : 
  Colorado 
  ; 
  by 
  George 
  W. 
  Stose. 
  

   — 
  Pp. 
  12 
  ; 
  20 
  figs., 
  3 
  maps, 
  13 
  pis. 
  

  

  Mineral 
  Resources 
  of 
  the 
  "United 
  States, 
  Calendar 
  Year, 
  1911. 
  

   Part 
  I. 
  Metals. 
  Pp. 
  1018 
  ; 
  16 
  figs. 
  

  

  Bulletins. 
  — 
  No. 
  502. 
  The 
  Eagle 
  River 
  Region, 
  Southeastern 
  

   Alaska 
  ; 
  by 
  Adolph 
  Knopf. 
  Pp. 
  61 
  ; 
  5 
  pis., 
  3 
  figs. 
  

  

  No. 
  503. 
  Iron-Ore 
  Deposits 
  of 
  the 
  Eagle 
  Mountains, 
  Cal- 
  

   ifornia 
  ; 
  by 
  Edmund 
  C. 
  Harder. 
  Pp. 
  81 
  ; 
  13 
  pis., 
  4 
  figs. 
  

  

  No. 
  52V. 
  Ore 
  Deposits 
  of 
  the 
  Helena 
  Mining 
  Region, 
  Mon- 
  

   tana 
  ; 
  by 
  Adolph 
  Knopf. 
  Pp. 
  143 
  ; 
  7 
  pis., 
  4 
  figs. 
  

  

  No. 
  529. 
  The 
  Enrichment 
  of 
  Sulphide 
  Ores 
  ; 
  by 
  William 
  

   H. 
  Emmons. 
  Pp. 
  260. 
  

  

  No. 
  537. 
  The 
  Classification 
  of 
  the 
  Public 
  Lands 
  ; 
  by 
  George 
  

   Otis 
  Smith 
  and 
  others. 
  Pp. 
  197 
  ; 
  8 
  figs. 
  

  

  Water 
  Supply 
  Papers. 
  — 
  No. 
  297. 
  Gazetteer 
  of 
  Surface 
  

   Waters 
  of 
  California. 
  Part 
  III. 
  Pacific 
  Coast 
  and 
  Great 
  Basin 
  

   Streams. 
  Prepared 
  under 
  the 
  direction 
  of 
  John 
  C. 
  Hoyt, 
  by 
  B. 
  

   D. 
  Wood. 
  Pp. 
  244. 
  

  

  No. 
  300. 
  Water 
  Resources 
  of 
  California. 
  Part 
  III. 
  Stream 
  

   Measurements 
  in 
  the 
  Great 
  Basin 
  and 
  Pacific 
  Coast 
  River 
  Basins. 
  

   Prepared 
  under 
  the 
  direction 
  of 
  John 
  C. 
  Hoyt, 
  by 
  H. 
  D. 
  

   McGlashan 
  and 
  H. 
  J. 
  Dean. 
  Pp. 
  956 
  ; 
  4 
  pis. 
  

  

  No. 
  310. 
  Surface 
  Water 
  Supply 
  of 
  the 
  United 
  States 
  1911. 
  

   Part 
  X. 
  The 
  Great 
  Basin. 
  Prepared 
  under 
  the 
  direction 
  of 
  M. 
  

   O. 
  Leighton 
  ; 
  by 
  F. 
  F. 
  Henshaw, 
  H. 
  D. 
  McGlashan, 
  and 
  E. 
  

   A. 
  Porter. 
  Pp. 
  210 
  ; 
  4 
  pis. 
  

  

  No. 
  313. 
  Water 
  Powers 
  of 
  the 
  Cascade 
  Range. 
  Part 
  II. 
  

   Cowlitz, 
  Nisqually, 
  Puyallup, 
  White, 
  Green, 
  and 
  Cedar 
  Drainage 
  

   Basins 
  ; 
  by 
  Fred 
  F. 
  Henshaw 
  and 
  Glenn 
  L. 
  Parker. 
  Pp. 
  

   170 
  ; 
  16 
  pis., 
  12 
  figs. 
  

  

  No. 
  316. 
  Geology 
  and 
  Water 
  Resources 
  of 
  a 
  portion 
  of 
  South- 
  

   Central 
  Washington 
  ; 
  by 
  Gerald 
  A. 
  Waring. 
  Pp. 
  46 
  ; 
  one 
  

   plate, 
  one 
  fig. 
  

  

  