﻿380 
  Linebarger 
  — 
  Some 
  Relations 
  between 
  Temperature, 
  

  

  Tioga 
  mining 
  district. 
  — 
  This 
  is 
  situated 
  to 
  the 
  northwest 
  of 
  

   Mono 
  Pass 
  in 
  the 
  same 
  body 
  of 
  schists 
  that 
  occurs 
  in 
  the 
  pass. 
  

   Some 
  specimens 
  obtained 
  here 
  in 
  1886 
  by 
  the 
  writer 
  from 
  the 
  

   Isbell 
  claim 
  on 
  Lee 
  Vining 
  Creek. 
  These 
  were 
  assayed 
  by 
  

   Dr. 
  W. 
  EL 
  Melville 
  with 
  the 
  following 
  results 
  : 
  

  

  No. 
  876 
  Sierra 
  Nevada 
  Collection 
  — 
  

  

  a: 
  chiefly 
  made 
  up 
  of 
  zinc 
  blende; 
  contains 
  5 
  oz. 
  gold 
  

  

  and 
  7 
  oz. 
  silver 
  to 
  the 
  ton. 
  

   b: 
  largely 
  iron 
  and 
  copper 
  pyrites; 
  contains 
  a 
  trace 
  of 
  

  

  gold, 
  and 
  nearly 
  16 
  oz. 
  silver 
  to 
  the 
  ton. 
  

   c: 
  contains 
  a 
  large 
  amount 
  of 
  arsenical 
  pyrite, 
  51 
  oz. 
  gold 
  

  

  and 
  32 
  oz. 
  silver 
  to 
  the 
  ton. 
  

  

  The 
  above 
  samples 
  probably 
  do 
  not 
  represent 
  an 
  average 
  of 
  

   the 
  ore 
  and 
  are 
  merely 
  given 
  to 
  show 
  the 
  association 
  of 
  min- 
  

   erals 
  in 
  the 
  vein. 
  

  

  Washington, 
  D. 
  C. 
  

  

  Art. 
  XXX. 
  — 
  On 
  Some 
  Relations 
  between 
  Temperature, 
  

   Pressure, 
  and 
  Latent 
  Heat 
  of 
  Vaporization 
  ; 
  by 
  C. 
  E. 
  

   Linebarger. 
  

  

  The 
  well-known 
  equation 
  

  

  ^-A-^-— 
  or 
  %L 
  -A-£- 
  (1) 
  

  

  dT~ 
  T(v-v'y 
  dT~ 
  Tdv' 
  v 
  ; 
  

  

  in 
  which 
  p 
  is 
  the 
  pressure; 
  T, 
  the 
  temperature; 
  p, 
  the 
  latent 
  

  

  heat 
  of 
  vaporization 
  ; 
  v, 
  the 
  volume 
  of 
  the 
  saturated 
  vapor 
  ; 
  

  

  and 
  v\ 
  that 
  of 
  the 
  liquid, 
  may 
  be 
  considered 
  to 
  resume 
  most 
  

  

  of 
  the 
  relations 
  between 
  temperature, 
  pressure, 
  and 
  latent 
  heat 
  

  

  of 
  vaporization 
  ; 
  it 
  expresses 
  fundamental 
  relationships 
  between 
  

  

  heat, 
  — 
  and 
  volume-energy, 
  as 
  is 
  at 
  once 
  seen, 
  when 
  it 
  is 
  thrown 
  

  

  into 
  the 
  form 
  : 
  

  

  dT 
  

   dp 
  dv 
  = 
  Ap-frTj 
  (2) 
  

  

  an 
  equation 
  of 
  which 
  the 
  left-hand 
  member 
  contains 
  only 
  the 
  

   factors 
  of 
  volume- 
  energy, 
  and 
  the 
  right-hand 
  member 
  only 
  

   those 
  of 
  heat-energy. 
  But 
  certain 
  relationships 
  between 
  these 
  

   factors 
  of 
  energy 
  were 
  found 
  out 
  quite 
  independently 
  of 
  the 
  

   fundamental 
  equation 
  ; 
  guided 
  by 
  no 
  theoretical 
  considerations, 
  

   their 
  discoverers, 
  by 
  scrutinizing 
  experimental 
  data, 
  saw 
  some 
  

   regularities 
  which, 
  when 
  generalized, 
  became 
  laws, 
  although 
  

   approximate 
  and 
  containing 
  inexplicable 
  anomalies. 
  Also, 
  the 
  

  

  