AmJu0nUe?l?oh2frm•}    Restoring  Broken  Soxhlet  Apparatus.  281 
a  in  the  cut — i.  e.,  for  the  given  dimensions  it  should  not  exceed  25 
c.c.  The  flask  is  now  set  on  a  water  bath  and  the  funnel-tube  is 
attached  at  C  to  a  reflux  condenser,  properly  supported.  When  heat 
is  now  applied  to  the  water  bath,  the  vapors  generated  in  the  flask 
escape  through  A,  are  liquefied  in  the  condenser,  and  drop  back  into 
the  funnel. 
With  light  solvents,  using  apparatus  L,  the  solvent  displaces  the 
water  from  the  narrow  tube,  driving  it  toward  c.  As  soon  as 
enough  of  the  solvent  has  accumulated  to  extend  beyond  the  bend 
at  the  lower  end  of  this  tube,  it  will  ascend  in  bubbles  through  the 
solution  contained  in  the  coils,  and  will  be  discharged  through  d 
back  into  the  flask.  From  here  it  will  repeat  the  circuit.  If  the 
heat  is  properly  regulated,  the  apparatus  will  functionate  perfectly 
automatically,  and  may  be  left  to  itself  until  the  solution  is  entirely 
exhausted. 
When  the  apparatus  H  is  used  for  extrahents  heavier  than  water 
the  solvent  descends  in  bubbles  through  the  solution  in  the  coils, 
ascends  through  the  narrow  tube  and  flows  back  into  the  flask 
through  d.  In  other  respects  the  apparatus  functionates  precisely 
like  L.  If  the  apparatus  should  break  it  can  usually  be  readily 
joined  by  rubber  tubing. 
The  extractors  which  I  am  using  were  made  after  my  directions 
by  E.  Machlett  &  Sons,  143  East  Twenty-third  Street,  New  York, 
at  a  cost  of  $3  for  the  pair. 
A  WAY  OF  RESTORING  BROKEN  SOXHLET 
APPARATUS  TO  USEFULNESS. 
By  Torai^d  Soumann,  M.D. 
Every  one  who  has  had  occasion  to  work  with  Soxhlet  extractors 
has  doubtless  been  greatly  annoyed  by  the  fragility  of  this  apparatus. 
The  fracture  occurs  almost  invariably  at  the  point  a  {Fig.  1),  pre- 
cisely where  it  is  impossible  to  repair,  and  the  apparatus  is  rendered 
absolutely  useless.  The  description  of  a  simplified  extractor  pub- 
lished by  L.  D.  Haverhill  {Drug,  Circ,  Vol.  46,  p.  193)  suggested 
to  me  a  way  of  restoring  such  broken  apparatus  to  some  degree  of 
usefulness,  as  follows  : 
The  tube  b  (Fig.  2)  is  cut  off  smooth  at  the  broken  point.  The 
tube  c  is  closed  by  a  small  blowpipe  flame,  as  close  as  convenient  to 
