Am.  Jour.  Pharm. ) 
|April,  1914.  J 
Current  Literature. 
193 
of  filtration,  of  length  of  application  and  of  amount  is  still  in  an 
experimental  stage. 
The  radium  salts  and  the  emanation  can  be  placed  in  any  sealed 
container,  but  preferably  in  glass. 
Dosage:  It  may  be  administered  as  baths,  by  subcutaneous  in- 
jection in  the  neighborhood  of  an  involved  joint  (0.25  to  0.5  micro- 
curie  in  1  or  2  c.c.  distilled  water),  by  local  application  as  com- 
presses (5-10  microcuries),  by  mouth  as  a  drink  cure  (in  increas- 
ing doses  of  from  1-10  to  10  microcuries  three  or  more  times  a  day), 
by  inhalation,  the  patient  for  two  hours  daily  remaining  in  the 
emanatorium,  which  contains  0.0025  to  0.25  (average  0.1)  micro- 
curie  per  liter  of  air. 
Radium  Chloride. 
Radium  chloride  is  the  anhydrous  radium  salt,  RaCl2,  of  hydro- 
chloric acid.  While  nearly  pure  radium  chloride,  containing  76.1  per 
cent,  radium  (Ra),  is  said  to  be  obtainable,  the  market  supply  is  a 
mixture  of  radium  chloride  and  barium  chloride  and  is  sold  on  the 
basis  of  its  radium  content. 
Actions  and  Uses:  See  Radium. 
Dosage:  See  Radium. 
Non-Proprietary  Preparation : 
Radium  Chloride,  Standard  Chemical  Co. — Radium  chloride  is 
supplied  in  the  form  of  a  mixture  of  radium  chloride  and  barium 
chloride  for  use  in  radium  baths,  radium  drinking-water  and  inhala- 
toriums.    It  is  sold  on  the  basis  of  its  radium  content. 
Manufactured  by  the  Standard  Chemical  Co.,  Pittsburgh,  Pa. 
(The  Radium  Chemical  Co.,  Pittsburgh,  Pa.). 
Pure  anhydrous  radium  chloride  occurs  as  a  white  or  slightly 
brownish  crystalline  substance,  soluble  in  water. 
The  presence  of  radium  can  qualitatively  be  demonstrated  by 
electroscopic  or  by  photographic  methods. 
The  quantitative  determination  of  radium  is  carried  out  accord- 
ing to  the  method  of  Rutherford  and  Boltwood  (Rutherford's 
"  Radioactive  Substances  and  their  Radiations  "). 
Radium  Sulphate. 
Radium  sulphate  is  the  anhydrous  radium  salt,  RaS04,  of  sul- 
phuric acid.  While  nearly  pure  radium  sulphate,  containing  70.2 
per  cent.  (Ra),  is  said  to  be  obtainable,  the  market  supply  is  a 
