Ointment  Mill — A  Practical
Apparatus. — August  Zemsch,  of
Wiesbaden,  has  invented  an  oint-
ment mill,  which  is  shown  in  the
accompanying  cut  (Fig.  36).  It
is  constructed  either  entirely  of
iron,  or — for  salves  that  cannot
be  brought  in  contact  with  iron —
with  grinding  surfaces  of  hard
porcelain,  and  is  stated  to  enable
the  rapid  production  of  perfectly
smooth  ointments.  Its  price  is
said  to  be  held  so  low  that  it  pays

to  employ  this  apparatus  even  for  the  preparation  of  the  smaller  quanti-
ties of  ointment  requited   in  ordinary   pharmacies. —  Pharm.  Centralh.,

Dec.  19,  1895,  778.
Ointments-  WaterBalh

for  M tiling  atid  Bottling. —

W.  C.  Alpers  describes  a

water  bath  (see  Fig.  37),

which  he  uses  for  melting

and    bottling     petroleum

ointments.    The  bath  con-
sists of  two  cylindrical  tin

cans,  the  inner  having  a

capacity  of  about  a  quart

and  being  provided  with

a  cover.     It  is  suspended

by  means  of  tin  straps  at

the  top  in  the  center  of

the  outer  can,  with  a  space

of.  about  Yi  \s>yi  inch  all

around  between'the  sides

and  bottoms  of  the  two  cans.     The  inner  can,  which  contains  the  oint-


I  Mill.
40G  REPORT  ON  THE  PROGRESS  OF  PHARMACY.
