﻿Chemistry 
  and 
  Physics. 
  225 
  

  

  1.7993 
  for 
  common 
  lead 
  nitrate 
  and 
  1.7991 
  for 
  the 
  isotope 
  from 
  

   uranium. 
  — 
  Proc. 
  Nat. 
  Acad. 
  Sci., 
  4, 
  386. 
  h. 
  l. 
  w. 
  

  

  2. 
  A 
  New 
  Source 
  of 
  Glycerine. 
  — 
  In 
  a 
  report 
  to 
  Congress 
  the 
  

   U. 
  S. 
  Commissioner 
  of 
  Internal 
  Revenue 
  states 
  that 
  the 
  facili- 
  

   ties 
  of 
  the 
  Bureau 
  for 
  chemical 
  experimentation 
  have 
  been 
  

   utilized 
  in 
  developing 
  a 
  new 
  and 
  successful 
  process 
  for 
  pro- 
  

   ducing 
  glycerine. 
  It 
  was 
  feared 
  that 
  the 
  ordinary 
  method 
  of 
  

   producing 
  this 
  important 
  constituent 
  of 
  explosives 
  from 
  fats, 
  

   in 
  connection 
  with 
  a 
  shortage 
  in 
  their 
  supply, 
  might 
  fail 
  to 
  pro- 
  

   duce 
  a 
  sufficient 
  supply 
  for 
  military 
  purposes. 
  In 
  Germany 
  

   this 
  situation 
  occurred, 
  but 
  it 
  was 
  overcome 
  by 
  the 
  development 
  

   of 
  a 
  synthetic 
  process. 
  

  

  The 
  new 
  process 
  consists 
  in 
  recovering 
  the 
  glycerine 
  produced 
  

   by 
  the 
  fermentation 
  of 
  sugar. 
  It 
  was 
  found 
  that. 
  in 
  this 
  way 
  

   any 
  quantity 
  of 
  glycerine 
  that 
  might 
  be 
  required 
  could 
  be 
  pro- 
  

   duced, 
  and 
  this 
  was 
  confirmed 
  by 
  a 
  large 
  scale 
  experiment. 
  It 
  

   appears 
  that 
  the 
  process 
  is 
  capable 
  of 
  profitable 
  commercial 
  

   application. 
  — 
  Jour. 
  Indust. 
  Engr. 
  Chem., 
  11, 
  74. 
  h. 
  l. 
  w. 
  

  

  3. 
  The 
  Occurrence, 
  Chemistry, 
  Metallurgy 
  , 
  and 
  Uses 
  of 
  

   Tungsten. 
  — 
  This 
  monograph 
  of 
  264 
  pages 
  by 
  J. 
  J. 
  Runner 
  and 
  

   M. 
  L. 
  Hartmann, 
  including 
  an 
  extensive 
  bibliography 
  of 
  the 
  

   subject 
  by 
  the 
  latter 
  author, 
  has 
  been 
  issued 
  recently 
  by 
  the 
  

   South 
  Dakota 
  School 
  of 
  Mines, 
  Rapid 
  City, 
  S. 
  D., 
  as 
  Bulletin 
  

   No. 
  12, 
  Departments 
  of 
  Geology 
  and 
  Chemistry. 
  

  

  The 
  book 
  is 
  an 
  important 
  and 
  interesting 
  one. 
  The 
  industrial 
  

   demand 
  for 
  tungsten 
  has 
  greatly 
  increased 
  in 
  recent 
  times, 
  not 
  

   only 
  on 
  account 
  of 
  its 
  use 
  for 
  filaments 
  in 
  incandescent 
  electric 
  

   lights, 
  but 
  particularly 
  because 
  of 
  its 
  increased 
  application 
  as 
  a 
  

   constituent 
  of 
  "high 
  speed" 
  and 
  other 
  special 
  steels, 
  to 
  which 
  

   about 
  90 
  per 
  cent, 
  of 
  the 
  present 
  production 
  is 
  devoted. 
  The 
  

   fact 
  that 
  the 
  tungsten 
  ore 
  production 
  had 
  been 
  practically 
  a 
  

   German 
  monopoly, 
  led 
  to 
  a 
  great 
  stimulation 
  in 
  the 
  search 
  for 
  

   new 
  available 
  deposits. 
  Since 
  about 
  the 
  middle 
  of 
  1915 
  much 
  

   of 
  the 
  ore 
  has 
  been 
  produced 
  in 
  the 
  United 
  States, 
  so 
  that 
  in 
  

   1916 
  we 
  produced 
  more 
  tungsten 
  than 
  any 
  other 
  country. 
  South 
  

   Dakota, 
  which 
  stands 
  fourth 
  among 
  our 
  producing 
  states, 
  has 
  

   already 
  mined 
  over 
  a 
  million 
  dollars 
  worth 
  of 
  tungsten 
  ores 
  from 
  

   the 
  Black 
  Hills 
  district. 
  

  

  The 
  book 
  discusses 
  the 
  geological 
  occurrence 
  of 
  tungsten 
  with 
  

   special 
  reference 
  to 
  the 
  Black 
  Hills, 
  and 
  it 
  gives 
  an 
  excellent 
  

   account 
  of 
  its 
  metallurgy, 
  properties, 
  uses, 
  etc., 
  as 
  well 
  as 
  the 
  

   analytical 
  methods 
  applied 
  to 
  its 
  ores 
  and 
  products, 
  h. 
  l. 
  w. 
  

  

  4. 
  An 
  Advanced 
  Course 
  in 
  Quantitative 
  Analysis; 
  by 
  Henry 
  

   Fay. 
  8vo, 
  pp. 
  111. 
  New 
  York, 
  1917 
  (John 
  Wiley 
  & 
  Sons, 
  

   Inc.). 
  — 
  Professor 
  Fay 
  has 
  prepared 
  this 
  course 
  particularly 
  for 
  

   the 
  use 
  of 
  students 
  in 
  the 
  Massachusetts 
  Institute 
  of 
  Technology. 
  

   It 
  gives 
  an 
  excellent 
  series 
  of 
  directions, 
  with 
  copious 
  explana- 
  

   tory 
  notes. 
  The 
  book 
  begins 
  with 
  a 
  clear 
  statement 
  in 
  regard 
  

  

  