*Vi?i,  mT'}   On  the  Medicinal  Use  of  Green  Soap.  209 
These  three,  together  with  the  work  he  has  to  perform,  and  with 
personal  instruction,  make  him  a  good  student  for  the  College  of  Phar- 
macy and  a  reliable  pharmacist  thereafter. 
IMPROVED  FORMULA  FOR  CAMPHOR  WATER. 
By  Wm.  B.  AddinctTon,  Norfolk,  Ya. 
R.    Camphors,     .....  3iv, 
Magnes.  Carb.,    ....  3ii, 
Aquae  Destillat.,       ....  Oiv, 
Alcohol.,  .  .  .  .  q.  s. 
Take  just  enough  alcohol  to  dissolve  the  camphor  and  bring  it  to  a 
liquid  state ;  while  liquid  add  the  magnesia  and  triturate  (during  this 
time  the  alcohol  will  evaporate).  Then  mix  the  water,  as  usual,  and 
filter.  By  making  a  perfect  solution  of  the  camphor,  the  particles 
are  thoroughly  divided,  whereas  by  the  U.  S.  P.  process  only  enough 
alcohol  is  added  to  break  up  the  adhesion  of  its  particles  and  reduce 
it  to  powder,  and  all  must  have  noticed  the  numerous  small  grains  of 
camphor  left  on  the  filter  by  the  present  process.  Camphor  water  is 
made  by  the  process  I  suggest  in  one-half  the  time ;  magnesia  is  saved 
by  it,  and  all  the  camphor  directed  is  taken  up  in  the  solution.  By 
the  present  process  it  is  not.  There  is  no  deposit  formed  on  the  bot- 
tom or  sides  of  the  jar  by  standing.  I  have  tried  this  formula  for 
the  last  eight  months,  and  am  vey  much  pleased  with  it. 
ON  THE  MEDICINAL  USE  OF  GREEN  SOAP. 
By  the  Editor. 
A  short  time  ago,  a  correspondent  asked  us  for  a  formula  for  Tinc- 
tura  Saponis  viridis  composita,  which  he  informed  us  was  used  in  the 
eastern  cities.  At  first  we  were  unsuccessful  in  our  endeavors  to 
comply  with  the  wish  of  our  correspondent,  until  Messrs.  Wm. 
Mclntyre  and  Gustavus  Krause  furnished  us  with  the  following  for- 
mulas, which  we  publish  below  for  the  benefit  of  our  readers. 
Commercial  soft  or  green  soap  is  usually  made  now,  wholly  or  in 
part,  from  common  whale  and  other  fish  oil.  Hemp-seed  oil,  or  rather 
a,  mixture  of  it  with  various  other  liquid  fats,  has  formerly  been  used, 
but  long  since  substituted  by  almost  any  refuse  oil  which,  on  account  of 
smell,  rancidity  or  color,  is  unfit  for  other  uses.  These  oils  are  saponi- 
14 
