Am.  Jour.  Pharm.  \ 
April  1, 1873.  j 
Pharmaceutical  Notes. 
157 
action  of  lactic  acid  into  glucose,  and  thus  rendering  it  so  thick  and 
ropy  as  to  be  unfit  for  use. 
The  solution  of  lacto-phosphate  of  lime  is  made  by  dissolving  phos- 
phate of  lime  in  lactic  acid.  The  solution  should  be  assayed,  and 
water  added  to  make  the  required  amount,  which  is  two  grains  to  the 
teaspoonful  of  mixture.  The  solution  should  be  filtered  in  order  that 
the  emulsion  should  be  perfectly  white. 
The  phosphate  of  lime  and  cod-liver  oil  is  also  a  new  preparation, 
and  is  sometimes  used  in  preference  to  the  above.  It  is  made  by  add- 
ing freshly  prepared  phosphate  of  lime  to  the  emulsion  and  stirring 
constantly  until  it  is  thoroughly  and  uniformly  mixed.  On  standing, 
it,  however,  lets  fall  the  phosphate  of  lime,  and  requires  to  be  well 
shaken  before  it  can  be  used. 
In  all  the  above  preparations  much  labor  can  be  avoided  by  the  use 
of  a  patent  churn,  which  may  be  had  to  hold  thirty  or  forty  gallons 
of  the  mixture.  In  the  process  of  making  an  emulsion  of  this  kind 
on  a  large  scale,  care  should  be  taken  that  the  mucilage  is  perfectly 
uniform  and  free  from  lumps  before  the  oil  is  added. 
PHARMACEUTICAL  NOTES. 
Boston  Highlands,  January,  1878. 
Editor  of  the  American  Journal  of  Pharmacy  : 
Dear  Sir, — In  the  January  number  of  the  "  American  Journal  of 
Pharmacy,"  I  see  a  method  given  for  making  Ung.  Zinci  Oxidi  with  a 
paint-mill,  which,  to  a  person  making  only  a  small  quantity  at  a  time, 
would  be  both  cumbersome  and  expensive.  I  have  found  that  by  rub- 
bing the  zinc  oxide  with  a  small  quantity  of  glycerin  on  the  slab  to 
a  fine,  smooth  paste,  and  then  mixing  with  the  benzoinated  lard,  gives 
me  a  perfectly  smooth  ointment,  free  from  that  rough  or  gritty  feel- 
ing when  rubbed  on  the  skin,  as  when  made  in  the  ordinary  manner. 
I  have  also  found  glycerin  the  best  excipient  for  making  pills  of  ox- 
ide of  zinc,  care  being  taken  not  to  make  them  too  soft. 
For  suppositories  I  have  always  used  the  common  metallic  moulds^ 
set  in  a  tray.  I  fill  the  tray  with  ice  and  water,  then  immerse  the 
moulds.  After  standing  a  few  moments,  take  each  mould  separately 
and  breathe  in  it,  so  as  to  form  a  coating  of  moisture  on  the  inside ; 
then  put  in  a  small  quantity  of  lycopodium,  and  shake;  then  empty. 
This  leaves  a  coating  of  lycopodium.  Return  the  moulds  to  the  tray  ; 
