222  TITRATED  OPIUM  EXTRACT — SVAPNIA. 
ignoring  the  rightful  source.  It  is  doing  what  pharmaceutists  as 
a  class  are,  and  have  been  trying  for  years  past  to  undo  ;  namely, 
to  separate  pharmacy  from  medicine.  It  would  appear  that  in 
most  of  the  medical  and  scientific  journals  of  the  day  it  is  taken 
as  a  foregone  conclusion,  that  writers  on  these  subjects  must  be 
either  a  doctor  or  a  professor.  That  the  pharmaceutical  jour- 
nals should  insist  on  this  point  being  made  known,  and  well  un- 
derstood, will  appear  patent  to  all. 
Respectfully, 
Joseph  Harrop. 
Leavenworth,  Kansas,  April  15,  1869. 
ADDITIONAL  NOTE  ON  SOAP  LINIMENT. 
By  J.  B.  Moore. 
To  the  Editor. 
Lear  Sir. — In  my  hastily  written  article  on  "  Soap  Lini- 
ment," which  was  published  in  the  Mar.ch  number  of  the  Journal, 
I  inadvertantly  omitted  to  state  that,  where  coarse  powdered 
castile  soap  is  used  in  making  this  liniment,  that  the  proper  de- 
duction from  the  weight  of  the  soap  should  be  made  for  the  loss 
of  moisture  in  drying,  which,  I  presume  will  average  in  castile 
soap,  as  it  is  usually  found  in  the  market,  about  14  per  cent.  If 
this  deduction  is  not  made,  the  preparation  will  be  found  to  de- 
posit a  portion  of  the  soap  on  standing.  I  would  state  that 
instead  of  four  troy  ounces  in  shavings,  the  officinal  quantity,  I 
am  in  the  habit  of  using  three  troyounces  and  a  half  of  dry 
soap  in  coarse  powder,  which  is  nearly  the  equivalent,  and  which 
has  proved  satisfactory  in  practice. 
Yours  respectfully, 
J.  B.  Moore. 
ON  TITRATED  OPIUM  EXTRACT— SYAPNIA. 
By  William  Peocter,  Jr. 
Many  years  ago,  probably  twenty.  Prof.  David  Stewart,  of 
Baltimore,  wrote  on  the  importance  of  preparing  laudanum  of 
uniform  strength,  by  making  it  of  assayed  opium,  or  by  assay- 
ing it  in  coarse  preparation.  He  brought  this  subject  forward 
during  one  of  the  pharmacopoeia  revisions,  but  the  difficulty 
