329S7.    Eleclrk  Warm  Stage,  for  attaching  to  the  stage  of  any  microscope  without


Lt  tap  with  its  lamp  into  any  110  volt  electric  uunp  socket  and  turn  o
the  current.  Dimensions  3}  inches  in  diameter  by  i  inch  thick,  with  a  hole
in  the  center  )  inch  in  diameter  over  which  the  slide  may  be  placed.  With
heating  element,  thermometer  and  adjustable  electro-thermostat  which  auto-
matically maintains  a  constant  temperature  on  the  top  of  the  disc $10.00

.  Electric  Warm  Stage.  This  Warm  Stage  is  a  complete  miniature  incubator  and
fits  the  mechanical  stage  of  any  standard  microscope.  Outside  dtmensione
31  X  2  X  i  inches  in  thickness.  The  incubating  chamber  is  3  x  1  inches  by  i
inch  deep  with  a  removable  glass  bottom  consisting  of  a  3  it  1  slide,  thus  the
condenser  may  be  broueht  up  close  to  the  glass  as  under  ordinary  conditions,
p«rmitting  the  use  of  the  oil  immersion  lens.  The  top  of  the  incubator  con-
sists of  s  piece  of  clear  mica  with  a  hole  in  the  center  through  which  the  lens
is  passed  when  making  adjustment  for  the  bottom  slide.  A  rubber  washer
slipped  over  the  lens  is  provided  for  sealing  the  openins  between  the  lens  and
mica.  By  this  arrangement  a  perfect  incubating  chamber  is  obtained.  Com-
plete  with  heating  element,  thermometer  and  adjustable  electro -thermostat
which  automatically  maintains  a  constant  temperature  inside  the  incubating
chamber.    For  temperatures  between  80*  and  110°  F 119.00

ARTHUR  H,  THOMAS  COMPANY


LABORATORY  APPARATUS    AND    REAGENTS

WEIT  WASHINQTON  SQUARE

PHILADELPHIA,  U.  S.  A.
