﻿58 
  

  

  Mr, 
  R. 
  F. 
  Earhart 
  on 
  the 
  Discharge 
  

   Table 
  XIII. 
  

  

  Ag-f 
  Ag- 
  

  

  X. 
  

  

  V. 
  

  

  X. 
  

  

  V. 
  

  

  2 
  

  

  211 
  

  

  3-5 
  

  

  338 
  

  

  2-5 
  

  

  235 
  

  

  3-5 
  

  

  335 
  

  

  2-5 
  

  

  282 
  

  

  4 
  

  

  357 
  

  

  3 
  

  

  306 
  

  

  4 
  

  

  320 
  

  

  3 
  

  

  306 
  

  

  4'5 
  

  

  352 
  

  

  3 
  

  

  306 
  

  

  5 
  

  

  334 
  

  

  35 
  

  

  306 
  

  

  5 
  

  

  352 
  

  

  Table 
  XIV. 
  

   Ag+ 
  Al- 
  

  

  . 
  Table 
  XV. 
  

   A1+ 
  Ag- 
  

  

  X. 
  

  

  V. 
  

  

  X. 
  

  

  V. 
  

  

  2 
  

  

  110 
  

  

  4 
  

  

  305 
  

  

  2 
  

  

  197 
  

  

  4-5 
  

  

  305 
  

  

  2-5 
  ... 
  

  

  132 
  

  

  5 
  

  

  320 
  

  

  3 
  

  

  225 
  

  

  5 
  

  

  320 
  

  

  3 
  

  

  291 
  

  

  6 
  

  

  325 
  

  

  3-5 
  

  

  238 
  

  

  6 
  

  

  329 
  

  

  4 
  

  

  291 
  

  

  6 
  

  

  320 
  

  

  X. 
  

  

  V. 
  

  

  X. 
  

  

  V. 
  

  

  2 
  

  

  Ill 
  

  

  4 
  

  

  301 
  

  

  2 
  

  

  197 
  

  

  4 
  

  

  320 
  

  

  25 
  

  

  137 
  

  

  4-5 
  

  

  320 
  

  

  3 
  

  

  273 
  

  

  5 
  

  

  325 
  

  

  3 
  

  

  282 
  

  

  6 
  

  

  342 
  

  

  35 
  

  

  291 
  

  

  6 
  

  

  3^8 
  

  

  4 
  

  

  305 
  

  

  

  

  In 
  all 
  these 
  cases 
  Hobbs 
  used 
  two 
  electrodes 
  of 
  the 
  same 
  

   metal. 
  Suppose, 
  however, 
  that 
  one 
  electrode 
  was 
  Pt, 
  the 
  

   other 
  made 
  o£ 
  Al. 
  A 
  number 
  of 
  possibilities 
  are 
  presented. 
  

   1st, 
  If 
  the 
  negative 
  corpuscle 
  is 
  the 
  carrier 
  of 
  the 
  discharge 
  

   the 
  gradient 
  should 
  be 
  determined 
  by 
  the 
  negative 
  electrode. 
  

   2nd, 
  If 
  the 
  positive 
  metal 
  ion 
  is 
  the 
  carrier, 
  the 
  positive 
  

   electrode 
  should 
  determine 
  the 
  gradient. 
  3rd, 
  If 
  either 
  one 
  

  

  