Am.  Jour.  Pharm.  ) 
Aug.  1,  1871.  j" 
Tincture  of  Hyoscyamus. 
355 
principally  of  acetate  of  soda  and  urea.  It  is  repeatedly  treated 
with  absolute  alcohol,  and  this  liquid  kept  in  a  high  beaker  glass  for 
several  days,  when  the  urea  creeps  up  on  the  sides  of  the  vessel,  crys- 
tallizing in  its  characteristic  forms  above  the  surface  of  the  liquid.- — 
Bid,,  234—236. 
OINTMENT  CONTAINING  MUCH  WATER. 
By  John  H.  Ehlers. 
The  following  recipe  was  recently  handed  to  me  to  be  filled : 
B.    I*yroligneous  Acid, 
Sulphur,  each    .  .  .  .4  ozs. 
•  Calomel,           .  .  .  .60  grs. 
Red  Precipitate,  .  .  .    40  " 
Spts.  Turpentine,  .  .  • 
Lard,     .           .  .  .  .      4    "  If. 
I  first  intimately  mixed  the  calomel  and  precipitate,  then  by 
degrees  the  sulphur,  the  turpentine,  and  finally  a  small  portion  of  the 
lard.  I  now  added  a  little,  say  two  fluiddrachms  of  the  acid,  but 
entirely  failed  to  get  a  mixture.  As  the  acid  is  largely  composed  of 
water,  the  object  was  to  dispose  of  the  latter  so  that  it  might  not 
interfere  with  the  mixture.  This  was  done  by  adding  to  the  salve  in 
the  mortar  a  little  wheat  flour,  with  perfect  success,  after  which  lard, 
flour  and  acid  were  added  alternately  until  the  ointment  was  finished, 
leaving  out  of  it  as  much  lard  as  flour  had  been  substituted.  Four 
hours  afterward,  the  ointment  not  having  been  called  for  yet,  and  the 
weather  being  very  warm,  it  was  found  that  some  of  the  lard  had 
melted,  and  was  floating  on  the  top,  but  readily  mixed  with  the  oint- 
ment again  on  making  use  of  a  spatula,  but  no  part  of  the  acid  at 
any  time  separated  from  it. 
Auhurn,  2nd.,  July  14,  1871. 
TINCTURE  OF  HYOSCYAMUS. 
By  M.  Donovan. 
Some  years  since  I  published,  through  the  medium  of  the  Medical 
Press,  an  account  of  trials  made  on  myself  and  others,  with  a  view  to 
discover  what  doses  of  tincture  of  hyoscyamus  should  be  given  in 
