ON  LIQUOR  FEB, III  PERACETATIS. 
7 
to  answer  a  good  purpose.  The  form  is  similar  to  the  follow- 
ing. The  full  size  would  be  too  large  for  convenient  insertion 
here  : 
For 
Pres.  of  Dr. 
No.  Price. 
For 
Pres.  of  Dr. 
No.  Price. 
Retain  this  check  until  the 
prescription  is  compounded,  orif 
it  is  inconvenient  to  wait,  let  the 
check  be  presented  by  the  per- 
son who  calls  for  the  medicine. 
Name  and  address  of  the 
Pharmaceutist. 
The  left  hand  portion  is  retained  by  the  Pharmaceutist,  and 
the  other  given  to  the  patient.  As  an  additional  caution  a  couple 
of  lines  are  drawn  with  a  pen  or  pencil  obliquely  across  the  line 
separating  the  part  retained  from  that  given  to  the  customer  ; 
when  the  check  is  returned  the  lines  on  it  must  correspond  with 
those  on  that  held  by  the  dispenser  when  the  two  edges  are  placed 
together.  Pencils  of  various  colors  might  be  used  by  different 
assistants  in  the  same  establishment ;  this  would  show  any  differ- 
ence at  a  glance,  and  might  prove  an  important  distinction  in 
large  establishments. 
Balsam  of  Peru. 
A  test  for  distinguishing  the  difference  between  the  true  and 
sophisticated  Balsam  of  Peru.  When  a  drop  or  two  of  the  true 
balsam  of  Peru  is  placed  upon  the  tongue  it  produces  a  liquid 
diffused  impression,  whilst  the  sophisticated  being  generally  a 
solution  of  resin,  which  deposits  the  resin  on  the  back  of  the 
teeth  and  on  the  tongue. 
We  are  indebted  to  Mr.  W.  J.  Jenks  for  this  simple  test,  which 
may  be  relied  on  as  furnishing  a  convenient  method  of  detecting 
the  true  from  the  false  balsam  of  Peru. 
ON  LIQUOR  FERRI  PERACETATIS. 
By  John  M.  Maisch. 
In  the  sixth  edition  of  the  Prussian  Pharmacopoeia  this  pre- 
paration was  officinal  under  the  name  of  liquor  ferri  acet^i,  and 
was  prepared  by  precipitating  a  solution  of  sesquichloride  of  iron 
with  ammonia,  and  dissolving  the  washed  hydrated  oxide  of  iron 
in  acetic  acid. 
The  seventh  edition  of  this  Pharmacopoeia  has  changed  the 
