﻿Chemistry 
  an 
  d 
  Phys 
  ics. 
  167 
  

  

  appearance 
  of 
  five 
  editions 
  of 
  this 
  book 
  since 
  the 
  first 
  issue 
  in 
  

   1895 
  shows 
  that 
  it 
  has 
  been 
  extensively 
  used. 
  The 
  sub-title 
  of 
  

   the 
  work 
  describes 
  it 
  as 
  "A 
  manual 
  of 
  chemical 
  analysis 
  for 
  the 
  

   use 
  of 
  students, 
  chemists 
  and 
  engineers," 
  but 
  it 
  is 
  to 
  be 
  observed 
  

   that 
  descriptions 
  of 
  many 
  physical 
  tests, 
  copies 
  of 
  specifications 
  

   and 
  other 
  topics 
  not 
  dealing 
  strictly 
  with 
  chemical 
  analysis 
  are 
  

   included. 
  On 
  the 
  other 
  hand, 
  the 
  book 
  deals 
  with 
  only 
  a 
  restricted 
  

   field 
  of 
  analytical 
  chemistry, 
  confining 
  itself 
  practically 
  to 
  such 
  

   materials 
  as 
  are 
  used 
  in 
  civil 
  or 
  municipal 
  engineering. 
  However, 
  

   the 
  book 
  presents 
  much 
  that 
  is 
  useful 
  in 
  this 
  field, 
  and 
  it 
  is 
  to 
  be 
  

   highly 
  recommended 
  to 
  those 
  who 
  are 
  interested 
  in 
  this 
  kind 
  of 
  

   work. 
  

  

  Among 
  the 
  subjects 
  most 
  extensively 
  treated 
  are 
  the 
  proximate 
  

   analysis 
  of 
  fuels, 
  their 
  colorimetry 
  and 
  their 
  physical 
  examination, 
  

   the 
  analysis 
  of 
  iron, 
  steel, 
  and 
  a 
  number 
  of 
  non-ferrous 
  alloys, 
  the 
  

   anal} 
  sis 
  and 
  physical 
  tests 
  of 
  cements, 
  concrete, 
  clay, 
  sand 
  and 
  

   building 
  stones, 
  the 
  examination 
  of 
  asphalt 
  and 
  other 
  bituminous 
  

   road 
  materials, 
  of 
  coal-tar 
  lubricating 
  oils, 
  illuminating 
  oils 
  and 
  

   fuel 
  oils, 
  soap 
  analysis, 
  varnish 
  analysis, 
  paint 
  analysis, 
  the 
  chemi- 
  

   cal 
  and 
  physical 
  examination 
  of 
  paper, 
  the 
  analysis 
  and 
  treatment 
  

   of 
  boiler 
  waters 
  and 
  potable 
  waters, 
  the 
  analysis 
  of 
  flue 
  gases, 
  

   illuminating 
  gases, 
  etc., 
  the 
  manufacture 
  of 
  producer 
  gas, 
  water 
  

   gas 
  and 
  acetylene, 
  photometry 
  and 
  pyrometry. 
  Many 
  official 
  

   methods 
  are 
  quoted 
  and 
  many 
  interesting 
  details 
  of 
  manufactur- 
  

   ing 
  operations 
  are 
  given. 
  h. 
  l. 
  w. 
  

  

  4. 
  Qualitative 
  Analysis 
  ; 
  by 
  E. 
  H. 
  S. 
  Bailey 
  and 
  Hamilton 
  

   P. 
  Cady. 
  8vo, 
  pp. 
  294. 
  Philadelphia, 
  1914 
  (P. 
  Blakiston's 
  Son 
  

   & 
  Co. 
  Price 
  $1.50 
  net). 
  — 
  This 
  is 
  the 
  eighth 
  edition 
  of 
  a 
  well- 
  

   known 
  laboratory 
  guide, 
  which 
  gives 
  an 
  excellent 
  course 
  of 
  in- 
  

   struction 
  in 
  chemical 
  analysis. 
  The 
  methods 
  of 
  qualitative 
  

   separation 
  and 
  detection 
  are 
  well 
  chosen 
  and 
  clearly 
  presented. 
  

   The 
  title 
  page 
  states 
  that 
  the 
  book 
  is 
  based 
  upon 
  the 
  application 
  

   of 
  the 
  theory 
  of 
  electrolytic 
  dissociation 
  and 
  the 
  law 
  of 
  mass 
  action. 
  

   There 
  is 
  a 
  rather 
  elaborate 
  introduction 
  dealing 
  w 
  T 
  ith 
  the 
  topics 
  

   just 
  mentioned, 
  and 
  the 
  ionic 
  nomenclature 
  is 
  used 
  to 
  an 
  extreme 
  

   extent 
  throughout 
  the 
  practical 
  part. 
  There 
  are 
  some 
  teachers 
  

   who 
  would 
  prefer 
  to 
  lead 
  up 
  to 
  the 
  ionic 
  theory 
  by 
  means 
  of 
  the 
  

   facts 
  encountered 
  in 
  qualitative 
  analysis, 
  rather 
  than 
  to 
  attempt 
  

   to 
  explain 
  the 
  facts 
  by 
  means 
  of 
  a 
  theory, 
  but 
  at 
  present 
  the 
  lat- 
  

   ter 
  method 
  appears 
  to 
  be 
  popular. 
  There 
  is 
  a 
  generalization 
  on 
  

   page 
  32 
  which 
  needs 
  modification 
  to 
  correspond 
  with 
  all 
  the 
  facts 
  : 
  

   "The 
  solubility 
  of 
  difficultly 
  soluble 
  salts 
  of 
  strong 
  acids, 
  how- 
  

   ever, 
  is 
  not 
  increased 
  by 
  the 
  addition 
  of 
  an 
  acid." 
  h. 
  l. 
  w. 
  

  

  5. 
  X-Ray 
  Wave- 
  Lengths. 
  — 
  A 
  valuable 
  paper 
  on 
  the 
  new 
  

   branch 
  of 
  spectroscopy— 
  the 
  study 
  of 
  the 
  wave-lengths 
  of 
  char- 
  

   acteristic 
  or 
  fluorescent 
  .X-rays 
  — 
  has 
  been 
  recently 
  written 
  by 
  

   Manne 
  Siegbahn. 
  The 
  article 
  begins 
  with 
  a 
  list 
  of 
  66 
  biblio- 
  

   graphical 
  references 
  which 
  indicates 
  how 
  rapidly 
  the 
  subject 
  has 
  

   grown 
  in 
  the 
  course 
  of 
  a 
  very 
  few 
  years 
  The 
  author 
  then 
  

   describes 
  the 
  various 
  types 
  of 
  bulbs 
  and 
  spectrometers 
  which 
  

   have 
  proved 
  most 
  efficient 
  in 
  producing 
  and 
  analyzing 
  the 
  radia- 
  

  

  