﻿194 
  Prof. 
  J. 
  Joly 
  on 
  the 
  Radium- 
  Content 
  

  

  (2) 
  Same, 
  but 
  with 
  re-fusion 
  of 
  undissolved 
  particles 
  ; 
  

  

  all 
  in 
  solution. 
  

   Radium 
  5 
  4' 
  5. 
  

  

  (3) 
  On 
  10 
  grams. 
  

  

  Part 
  soluble 
  in 
  HC1 
  (7*21 
  grams). 
  By 
  method 
  B. 
  

  

  Radium 
  per 
  gram 
  of 
  soluble 
  part 
  64'3. 
  

   Insoluble 
  part 
  (2'79 
  grams). 
  By 
  method 
  A. 
  

  

  Radium 
  per 
  gram 
  of 
  insoluble 
  part 
  15*7. 
  

  

  Mean 
  radium 
  content 
  per 
  gram 
  of 
  whole 
  amount 
  50*7. 
  

  

  Radiolarian 
  Ooze. 
  Chall. 
  Station, 
  272. 
  Lat, 
  3° 
  48' 
  S., 
  long. 
  

   152° 
  56' 
  W. 
  2600 
  fathoms. 
  (Central 
  Pacific.) 
  Mag- 
  

   netic 
  particles 
  had 
  been 
  removed 
  by 
  Sir 
  John 
  Murray. 
  

  

  On 
  5*61 
  grams 
  by 
  method 
  A 
  ; 
  one 
  solution. 
  

  

  Radium 
  22' 
  8. 
  

  

  Radiolarian 
  Ooze. 
  Chall. 
  Station, 
  274. 
  Lat, 
  7° 
  25' 
  S., 
  long. 
  

   152° 
  15' 
  W. 
  2750 
  fathoms. 
  (Central 
  Pacific.) 
  Mag- 
  

   netic 
  particles 
  had 
  previously 
  been 
  removed 
  from 
  this 
  

   Ooze 
  by 
  Sir 
  John 
  Murray. 
  

  

  (1) 
  On 
  20 
  grams 
  by 
  method 
  A. 
  

   Radium 
  50*3. 
  

  

  (2) 
  On 
  8 
  grams 
  by 
  method 
  A. 
  

   Radium 
  50'7. 
  

  

  (3) 
  On 
  6*33 
  grams, 
  method 
  A, 
  but 
  all 
  in 
  one 
  acid 
  

   solution. 
  

  

  Radium 
  49*8. 
  

  

  Manganese 
  Nodule. 
  Chall. 
  Station, 
  274 
  (as 
  above). 
  

  

  On 
  25 
  grams 
  by 
  method 
  B 
  (nearly 
  all 
  dissolved). 
  

   Radium 
  24*0. 
  

  

  Manganese 
  Nodule. 
  Albatross 
  Station, 
  4658. 
  Lat. 
  8°29''5 
  S., 
  

   long. 
  85° 
  36*6' 
  W. 
  2370 
  fathoms. 
  (Pacific 
  Ocean, 
  oft* 
  

   coast 
  of 
  Africa.) 
  

  

  On 
  12 
  grams 
  by 
  method 
  B, 
  the 
  hard 
  manganese 
  shell 
  

  

  only 
  used. 
  Nearly 
  all 
  dissolved. 
  

   Radium 
  21*0. 
  

  

  Magnetic 
  particles. 
  Chall. 
  Station, 
  241. 
  (N. 
  Pacific.) 
  2300 
  

   fathoms. 
  

  

  On 
  1*1 
  grams 
  (supplied 
  by 
  Sir 
  John 
  Murray) 
  by 
  

  

  method 
  A 
  ; 
  one 
  solution. 
  

   Radium 
  0*6. 
  

  

  It 
  will 
  be 
  Been 
  that 
  the 
  deposits 
  riohesi 
  in 
  radium 
  are 
  those 
  

   which 
  occur 
  in 
  the 
  most 
  central 
  parts 
  of 
  the 
  Pacific 
  Ocean. 
  

   From 
  this 
  region 
  not 
  only 
  the 
  \\vd 
  (May, 
  but 
  the 
  Radiolarian 
  

  

  