﻿22 
  

  

  W. 
  P. 
  White 
  — 
  Silicate 
  Specific 
  Heats. 
  

  

  Fig. 
  1. 
  

  

  0°Abs 
  0° 
  500° 
  1000° 
  

  

  Fig. 
  1. 
  Small 
  circles, 
  Magnus 
  7 
  values, 
  used 
  by 
  Nernst. 
  

  

  The 
  relation 
  of 
  the 
  present 
  results 
  to 
  this 
  general 
  

   tendency 
  is 
  shown 
  in 
  fig. 
  1, 
  which 
  gives 
  various 
  atomic 
  

   heats, 
  mainly 
  determined 
  by 
  Nernst 
  and 
  his 
  collabora- 
  

   tors, 
  along 
  with 
  3 
  from 
  the 
  present 
  investigation. 
  Dif- 
  

   ferent 
  as 
  these 
  heats 
  are, 
  they 
  are 
  all 
  alike 
  in 
  approaching 
  

   zero 
  at 
  zero 
  temperatures, 
  and 
  then 
  rising 
  to 
  near 
  5-96, 
  

   the 
  value 
  given 
  by 
  the 
  classical 
  kinetic 
  theory, 
  along 
  a 
  

   characteristic 
  curve. 
  It 
  is 
  clear 
  that 
  the 
  most 
  striking 
  

   character 
  of 
  the 
  silicate 
  atomic 
  heats, 
  their 
  low 
  value, 
  

   with 
  rapid 
  increase 
  at 
  a 
  diminishing 
  rate, 
  is 
  due 
  simply 
  

   to 
  the 
  fact 
  that 
  they 
  are, 
  at 
  room 
  temperatures, 
  on 
  the 
  

   steep 
  portion 
  of 
  their 
  development 
  curve. 
  Russell 
  22 
  has 
  

   definitely 
  connected 
  a 
  similar 
  location 
  of 
  this 
  curve 
  in 
  

   many 
  substances 
  with 
  the 
  presence 
  in 
  them 
  of 
  combined 
  

   oxygen; 
  indeed, 
  with 
  present 
  knowledge 
  of 
  the 
  general 
  

  

  22 
  A. 
  S. 
  Russell, 
  Messungen 
  von 
  spezifischen 
  Warmen 
  bei 
  tiefen 
  Tempera- 
  

   turen, 
  Phys. 
  Zs., 
  13, 
  64, 
  1912. 
  The 
  quantity 
  actually 
  given 
  by 
  Russell 
  is 
  

   fiv 
  but 
  the 
  value 
  of 
  f3v 
  determines 
  the 
  location 
  on 
  the 
  temperature 
  scale 
  of 
  

   the 
  steep 
  part 
  of 
  the 
  curve. 
  

  

  