244  Gun  Cotton  and  its  Preparations.  {Aj™?v§?£*" 
Dissolve  the  cotton  in  a  mixture  of  ether  with  part  of  the  alcohol, 
dissolve  the  thymol  in  the  balance  of  the  alcohol,  and  mix. 
Stimulants  in  Cutaneous  Diseases. 
Collodion  with  Iodide  of  Mercury. 
R.  Mercuric  Iodide   gj. 
Potassium  Iodide     ^ss. 
Alcohol   f  £iv. 
Ether   f  giv. 
Gun  Cotton    gj  grs.  iv. 
Triturate  the  iodides  together  in  a  mortar,  add  the  alcohol  boiling, 
and  rub  until  they  are  completely  dissolved.  Then  add  the  gun  cot- 
ton, lastly  the  ether,  and  agitate  frequently  until  the  cotton  is  all 
dissolved. 
Stimulants'and  Rubefacients. 
Collodion  with  Arnica. 
R.   Pulv.  Arnica   ^iv. 
Ether   f  ^xij. 
Stronger  Alcohol     q.  s. 
Gun  Cotton   3;ij  grs.  viij. 
Mix  the  ether  with  4  fluidounces  alcohol.  Moisten  the  arnica  with 
q.  s.  of  this,  pack  in  a  percolator  and  pour  on  the  balance,  following 
with  alcohol  until  16  fluidounces  of  tincture  have  been  recovered ;  to 
this  add  the  cotton,  and  agitate  frequently  until  dissolved. 
Collodion  with  Capsicum. 
R.  Grd.  Capsicum   %W. 
Ether  f  ^xij. 
Stronger  Alcohol   q.  s. 
Gun  Cotton   100  grs. 
Proceed  as  in  collodion  with  arnica,  recovering  16  fluidounces  of 
tincture,  in  which  dissolve  the  gun  cotton. 
Collodion  with  Mezereon. 
R.   Grd.  Mezereon   ^iv. 
Ether     f  'Jxij- 
Alcohol   q.  s. 
Gun  Cotton   128  grs. 
Mix  the  ether  with  4  fluidounces  of  strong  alcohol,  and  in  this 
allow  the  mezereon  to  macerate  one  week.  Drain,  pack  tightly  in  a 
conical  percolator,  pour  on  the  separated  liquid,  and  follow  with 
enough  alcohol  to  recover  16  fluidounces  of  tincture,  in  which  dissolve 
the  cotton. 
Collodion  with  Savin. 
R.  Powd.  Savin  Leaves  |   %\v. 
Ether   f  ^xij. 
Alcohol     q.  s. 
Gun  Cotton  .,   grs.  128. 
Proceed  in  same  manner  as  collodion  with  capsicum. 
