512  PUBLICATION  OF  THE  REVISED  PHARMACOPOEIA. 
five  or  six  hours,  with  the  precaution  to  agitate  it  from  time  to 
time  so  as  to  favor  the  vaporization  of  the  last  traces  of  the 
ether, — when  it  is  finished. 
Candles  for  poisoning  rats. — M.  Severin  Causse  (d'Alby)  has 
adopted  Tartar  Emetic  as  a  rat  poison.  To  prevent  mistakes, 
he  has  given  the  poison  the  form  of  candles  ;  here  is  the  for- 
mula : — 
Suet  786  grains, 
Tartar  Emetic  153  « 
Euphorbium  51  « 
Cotton  10  « 
Aventurine  a  pinch, 
Make  into  thirty-two  candles. 
Admitting  the  mixture  to  be  perfect,  each  gramme  of  suet 
(15  grs.)  contains  15  centigrammes  (1|-  grs.)  of  Tartar  Emetic 
and  |-  a  grain  of  Euphorbium. — Jour,  de  Chim.  Mid. 
ON  THE  PUBLICATION  OF  THE  REVISED  PHARMACOPOEIA. 
By  Edward  Parrish. 
Two  and  a"  half  years  have  now  elapsed  since  the  Convention 
met  in  Washington,  to  give  official  sanction  to  the  decennial  re- 
vision of  the  National  Standard,  and  we  are  not  yet  publicly 
apprised  of  the  changes  which  have  met  the  approval  of  the 
Committee,  and  are  to  be  binding  upon  us  all  until  the  time  of 
the  next  decennial  Convention. 
It  is  with  no  disposition  to  find  fault  with  the  Committee  of 
revision,  and  I  hope  with  a  full  appreciation  of  the  difficulties 
attendant  on  the  trust  committed  to  them,  that  I  design  in  this 
paper  to  give  a  concise  statement  of  the  reasons  urged  on  all 
hands  as  calling  for  the  speedy  publication  of  the  work. 
1st.  The  Pharmacopoeia  of  1850  is  universally  felt  to  be  be- 
hind the  times;  in  fact  the  holding  of  the  Convention  of  1860 
and  the  appointment  of  the  Committee  of  revision  and 
publication,  are  evidences  of  this  universally  admitted  fact. 
2d.  Sufficient  is  known  of  the  proposed  modifications,  to  have 
unsettled  the  practice  of  many  Pharmaceutists  and  to  have 
interfered  with  the  uniformity  which  it  is  the  object  of  the 
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