﻿RvTiiEKi-'uHH 
  A 
  liit'HAnn.snx. 
  

  

  Phil. 
  Mag. 
  Ser. 
  6, 
  Vol. 
  2G, 
  PL 
  XIX. 
  

  

  PlG. 
  1.- 
  — 
  Analysis 
  nl' 
  nulntinns 
  t'nmi 
  urtivr 
  ilcj.insit 
  of 
  thorium. 
  

  

  Fro. 
  3.— 
  Analysis 
  of 
  i 
  

  

  '■ 
  Ftg. 
  5. 
  — 
  Analysis 
  of 
  ■ 
  

  

  "- 
  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  "\ 
  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  i 
  

  

  \ 
  

  

  

  V 
  - 
  " 
  

  

  

  

  

  

  

  , 
  

  

  J 
  ^ 
  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  V 
  

  

  

  J\ 
  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  ho. 
  ■- 
  

  

  -A, 
  

  

  .lysis 
  

  

  of 
  y 
  , 
  

  

  ays 
  ft 
  

  

  

  ive 
  deposit 
  

  

  ftlio 
  

  

  in,,,. 
  

  

  

  X 
  

  

  

  

  

  

  

  

  

  

  

  

  ^ 
  

  

  

  

  

  

  

  

  

  

  

  

  >s 
  

  

  r 
  

  

  

  

  

  

  

  

  

  

  i 
  

  

  

  \. 
  

  

  \ 
  

  

  

  

  

  

  

  

  

  I 
  

  

  i 
  

  

  

  \ 
  

  

  ^ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  >> 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  -V- 
  

  

  A 
  

  

  Jv 
  

  

  jL 
  

  

  

  . 
  7 
  

  

  FlG. 
  4. 
  — 
  Penetrating 
  y 
  nulialinii 
  hum 
  nu'suthorium 
  '_'. 
  

  

  \ 
  

  

  

  

  

  

  

  

  \ 
  

  

  \ 
  

  

  

  

  

  

  

  

  \ 
  

  

  S 
  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  \ 
  

  

  \ 
  

  

  

  ■o 
  

  

  

  

  

  

  \ 
  

  

  ■» 
  

  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  ,.\ 
  

  

  

  

  

  

  

  

  

  

  

  • 
  \\ 
  

  

  

  

  

  

  

  

  

  

  

  r 
  \ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  '„, 
  7 
  

  

  -A, 
  

  

  

  .r 
  > 
  radiati 
  

  

  n 
  fro 
  

  

  , 
  n,l 
  

  

  actinium. 
  

  

  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  

  V 
  

  

  s, 
  

  

  

  

  

  

  

  . 
  

  

  

  

  

  — 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  Fid. 
  6.— 
  Analysis 
  nl' 
  y 
  ra«1iat:.'!i 
  ln.ni 
  .i.-li\.- 
  .lopiM* 
  of 
  ai-tiim 
  

  

  \ 
  

  

  

  

  

  

  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  V 
  

  

  

  

  

  

  

  

  \ 
  

  

  