'^™ju'iy^i883^'*°^"  1        Comparison  of  Galenical  Preparations.  347 
COMPAKISON  OF  GALENICAL  PREPARATIONS  OF  THE 
UNITED  STATES  AND  GERMAN  PHARMACOPOEIAS. 
By  the  Editor. 
(Continued  from  page  308.) 
Aqua  Rosce. — Fresh  rose  petals  40  parts,  water  200  parts  ;  distil 
100  parts.  U.  S. — Attar  of  rose  4  drops,  lukewarm  distilled  water 
1,000  grams ;  agitate  for  some  time  and  filter.    P.  G. 
Argenti  Nitras  dilutus,  U.  S. — Argentum  nitricum  cam  Kali  nitrico. 
P.  G. — Nitrate  of  silver  and  nitrate  of  potassium  equal  parts.  U.S. — 
Nitrate  of  silver  1  part,  nitrate  of  potassium  2  parts.  P.  G. 
Ceratum  Cantharidis,  U.  S. — Emplastrum  Cantharidum  ordinarium, 
P.  G. — Powdered  cantharides  35  p.,  yellowwax  20  p.,  resin  20  p.,  lard 
25  p;  to  make  100  parts  U  .S. — Powdered  cantharides  50  parts,  olive 
oil  25  p.,  yellow  wax  100  p.,  turpentine  25  p. ;  to  make  200  parts. 
P.  G. 
Ceratum  Plumhi  Subacetatis,  U.  S. — Unguentum  Plumbi,  P.  G. —  " 
Goulard's  extract  20  parts,  camphor  cerate  80  parts,  U.  S. — Goulard's 
extract  8  parts,  lard  92  parts  P.  G. — In  consistence  the  latter  prepara- 
tion is  intermediate  between  the  former  and  the  linimentum  plumbi 
subacetatis  U.  S.  which  is  made  witli  Goulard's  extract  40  p.  and  cot- 
ton seed  oil  60  parts.  Both  the  U.  S.  P.  preparations  are  considerably 
stronger  than  the  lead  ointment  of  the  P.  G. 
Ceratum  Pesince,  U.  8.  Unguentum  basilicum,  P.  G. — Resin  35  p.^ 
yellow  wax  15  p.,  lard  50  p.  U.  S. — Resin  15  p.,  turpentine  10  p., 
yellow  wax  15  p.,  olive  oil  45  p.,  suet  15  p.  P.  G. 
Ceratum  Sabince,  U.  S. — Unguentum  Sabinse,  P.  G. — Fluid  extract 
of  savin  25  parts,  resin  cerate  90  parts ;  melt,  mix  and  evaporate  the 
alcohol.    U.  S. — Extract  of  savin  1  part,  ointment  9  parts.  P.  G. 
Charta  Potassii  Nitratis,  U.  S.  Charta  nitratis,  P.  G. — Potassium 
nitrate  is  dissolved  in  4  parts,  U.  8.,  in  5  parts,  P.  G.,  of  distilled  water ; 
unsized  paper  is  impregnated  with  the  solution  and  dried. 
Charta  8inapis,  U.  8. — Charta  sinapisata,  P.  G. — The  latter  phar- 
macopoeia simply  directs  this  to  be  paper,  to  which  powdered  black 
mustard  deprived  of  the  fixed  oil,  has  been  made  to  adhere. 
Collodium. — Pyroxylhi  4  p.,  stronger  ether  70  p.,  alcohol  26  p.  U. 
8. — Collodion  cotton  4  p.,  stronger  ether  84  p.,  alcohol  12  p.  P.  G. 
Collodium  cum  Cantharide,  U.  8.  Collodium  cantharidatum,  P.  G. 
— Exhaust  cantharides  60  p.  with  chloroform,  distil  and  evaporate 
