Am.  Jour.  Pharm. 
Oct.,  1891. 
Gombergs  Extraction  Apparatus. 
475 
the  upper  bend  being  a  little  below  the  level  of  the  powder  in  the 
percolator,  p'  from  the  connection  with  the  combustion  tubing  h  to 
the  second  turn  i,  is  35  cm.;  the  remainder  p,  25  cm.,  should  run  par- 
allel with  f,  and  both  p  and  f  are  fitted  into  a  two-holed  stopper, 
which  in  turn  is  fitted  into  a  florentine  flask  k  of  one  liter  capacity. 
The  whole  apparatus  is  supported  by  a  high  retort  stand  the  per- 
colator by  a  large  ring,  and  the  condenser  by  a  condenser 
clamp.    The  flask  k  is  supported  by  a  small  retort  stand  fitted  with 
a  suitable  ring.    The  syphon  p  and  pf  may  consist  of  two  sections, 
joined  by  a  piece  of  rubber  tubing  at  i    The  use  of  the  apparatus  is 
readily  understood  from  the  above. 
Detroit,  Mich.,  August,  1891. 
Suppositories  of  Glycerin.— Soak  for  two  or  three  hours  gelatin[2o  gm.  in 
distilled  water  45  gm.;  then  melt  the  mixture  in  a  water  bath,  add  glycerin  165 
gm.,  and  pour  into  suitable  moulds  ;  roll  the  suppositories  in  prepared  chalk. 
— Pet.  Mon.  de  la  Phar.,  June. 
