﻿Books 
  of 
  JOSEPH 
  R 
  IDDINGS 
  

  

  ROCK 
  MINERALS 
  

  

  Their 
  Chemical 
  and 
  Physical 
  Characters' 
  and 
  Their 
  Determination 
  

   in 
  Thin 
  Sections. 
  Second 
  Edition, 
  Revised 
  and 
  Enlarged. 
  

  

  Part 
  I 
  of 
  this 
  standard 
  book 
  takes 
  up 
  the 
  subjects 
  of 
  general 
  principles 
  and 
  

   methods 
  of 
  research, 
  treating 
  chemical 
  and 
  physical 
  principles 
  and 
  characters, 
  

   and 
  optical 
  properties, 
  while 
  Part 
  II 
  takes 
  up 
  the 
  description 
  of 
  the 
  rock 
  min- 
  

   erals, 
  giving 
  tables 
  of 
  their 
  optical 
  characteristics, 
  and 
  a 
  colored 
  plate 
  exhibit- 
  

   ing 
  the 
  interference 
  colors 
  and 
  birefringence. 
  

  

  xiii 
  + 
  617 
  pages. 
  6 
  by 
  9. 
  500 
  figures, 
  and 
  1 
  colored 
  plate. 
  

   Cloth, 
  $5.00 
  postpaid. 
  

  

  IGNEOUS 
  ROCKS 
  

  

  Composition, 
  Texture 
  and 
  Classification, 
  Description 
  and 
  

   Occurrence. 
  

  

  Vol. 
  I. 
  Composition, 
  Texture 
  and 
  Classification. 
  

  

  In 
  this 
  volume 
  the 
  essential 
  features 
  of 
  the 
  petrology 
  of 
  igneous 
  rocks 
  have 
  

   been 
  presented 
  in 
  such 
  a 
  manner 
  as 
  to 
  inform 
  the 
  student 
  of 
  the 
  fundamental 
  

   facts 
  of 
  the 
  subject. 
  His 
  attention 
  is 
  also 
  called 
  to 
  the 
  lines 
  along 
  which 
  

   further 
  advancement 
  of 
  the 
  science 
  may 
  be 
  made. 
  

  

  xi 
  + 
  464 
  pages. 
  6 
  by 
  9. 
  130 
  figures, 
  2 
  colored 
  plates. 
  

   Cloth, 
  $5.00 
  postpaid. 
  

  

  Vol. 
  II. 
  Description 
  and 
  Occurrence. 
  

  

  Gives 
  a 
  brief 
  sketch 
  of 
  the 
  distribution 
  of 
  igneous 
  rocks 
  througout 
  the 
  ear$i 
  

   so 
  far 
  as 
  now 
  known, 
  laying 
  the 
  foundation 
  for 
  a 
  study 
  of 
  possible 
  petrograph- 
  

   ical 
  provinces 
  in 
  different 
  regions. 
  

   xi.+ 
  685 
  pages. 
  6 
  by 
  9. 
  20 
  figures, 
  8 
  maps 
  (6 
  colored) 
  and 
  over 
  2000 
  chemical 
  

   analyses 
  of 
  rocks. 
  Cloth, 
  $6.00 
  postpaid. 
  

  

  Send 
  for 
  copies 
  for 
  Free 
  Examination. 
  

  

  JOHN 
  WILEY 
  & 
  SONS, 
  Inc. 
  

  

  Dept. 
  B.— 
  432 
  Fourth 
  Avenue, 
  New 
  York 
  

  

  London: 
  Chapman 
  & 
  Hall, 
  Ltd. 
  

  

  Montreal, 
  Can. 
  : 
  Manila, 
  P. 
  I. 
  : 
  

  

  Renouf 
  Publishing 
  Co. 
  Philippine 
  Education 
  Co. 
  

  

  ajs-2-20 
  

  

  