Am.  Jour.  Pharm.") 
March,  1891.  J 
A  Carboy  Rocker. 
123 
satisfactory;  the  cradles  being  cumbersome  and  requiring  two  per- 
sons to  lift  the  carboy  into  the  cradle. 
The  use  of  trunnions  is  objectionable,  because  it  necessitates 
the  defacing  and  weakening  of  the  sides  of  the  carboy. 
It  occurred  to  the  writer  to  take  a  steel  rod  about  fifteen 
feet  long  and  to  bend  it  into  the  shape  of  a  pair  of  parallel  bows 
joined  at  one  end  ;  after  carefully  tempering  the  steel  so  as  to 
secure  the  maximum  of  rigidity,  toughness  and  elasticity,  the 
carboy  rocker,  as  it  is  now  termed,  was  ready  for  trial. 
In  order  to  put  the  Carboy  Rocker  into  actual  use,  say  for  draw- 
ing oil  of  vitriol  from  a  loaded  carboy,  the  carboy  is  tilted  first  on 
its  bottom  edge,  and  then  raised  along  this  edge,  until  it  rests  on 
the  bottom  corner  (a  carboy  is  easily  held  in  this  position ,  by  one 
person),  one  of  the  arms  of  the  rocker  is  now  grasped,  and  the  con- 
necting brace  of  the  rocker  inserted  under  the  elevated  bottom 
edge,  the  carboy  is  then  carefully  lowered  into  its  original  position, 
when,  the  angles  of  the  front  part  of  the  bows  will  usually  slip  into 
their  places  on  the  top  of  the  carboy,  through  the  elasticity  of  the 
steel  springs,  without  further  adjustment. 
The  advantages  shown  that  this  apparatus  possesses,  is  simplicity 
of  construction,  durability  (as  it  is  practically  indestructible)  and 
cheapness;  the  curves  are  so  adjusted  as  to  cause  the  carboy,  when 
not  in  use,  to  assume  a  safe,  upright  position,  and  at  the  same  time 
the  upper  portion  is  Curved  so  as  to  project  above  the  top  of  the 
carboy  sufficiently,  so  as  to  permit  the  draining  of  the  last  drop 
from  the  carboy  when  it  is  inverted. 
Collodion  of  Salol,  useful  in  acute  rheumatism,  is  obtained  by  dissolving 
salol  4,  in  ether  4,  and  adding  to  collodion  30  parts.— Rip.  dc  Phar. 
