1 1 4  Platinum  Production,  { ^  Feb^^Iry^ V920: 
of  medicine  obtains  pharmaceutical  compounds  deemed  impossi- 
ble until  came  this  awakening  opportunity. 
Comes  now  the  necessity  of  revising  our  opinions  in  many  direc- 
tions where  past  assertions,  most  pronounced,  were  made,  regard- 
ing materials  seemingly  understood,  such  materials,  once  supposedly 
insoluble  in  water,  being  actually  soluble  to  any  degree,  provided 
they  are  by  colloidal  processes  untangled  from  plant  structural 
affiliations  with  chlorophyl  and  its  associated  bodies. 
PLATINUM  PRODUCTION  IN  RUSSIA.  1 
CoNSUiv  Alfred  R.  Thomson,  Omsk,  Siberia,  Sept.  9,  1919. 
The  mining  districts  of  the  Ural  Mountains  in  Russia  produce 
more  than  90  per  cent,  of  the  world's  supply  of  platinum.  The 
following  table  indicates  the  composition  of  the  crude  platinum 
deposits  in  three  of  these  regions,  the  percentages  of  pure  platinum 
therein,  and  the  percentages  of  other  metals  combined  therewith: 
Metallic  Composition. 
Nikolae  Pavdinsk 
Region. 
Per  cent. 
Nizhni  Tagil 
Region. 
Per  cent. 
Goroblagodat 
Region. 
Per  cent. 
Platinum  
86.50 
75  40 
84.50 
Rhodium  
115 
0.30 
2  .90 
4  30 
0.90 
Palladium  
I  .  10 
1 .40 
0.05 
I.  14 
0.50 
0.70 
0.03 
Chalk  
0.45 
4.00 
0.06 
Iron  
8.32 
II  .50 
765 
Quartz  
1 .30 
2  .  10 
Gold  
1 .30 
1-34 
I  .08 
Deposits  of  Platinum — Increase  in  Platinum  Production. — Crude 
platinum  in  the  three  regions  mentioned  is  usually  deposited  in 
layers  of  sand  3  to  7  feet- thick,  along  the  River  Isse  and  its  branches^ 
^  Commerce  Reports,  Nov.  24,  191 9. 
