Mr.  de  luc  on 
548 
FIG.  II. 
a a Stand  to  which  the  Pyrometer  is  fufpended. 
b The  hook  from  which  it  hangs. 
ccc  The  deal- board  which  is  the  balls  of  the  whole  ap- 
paratus. 
dddd  Four  arms  to  which  the  frame  eeee  is  fixed. 
eeee  The  frame. 
j'rrj'  Another  frame,  which  carries  the  Microfcope. 
gg  Two  crofs  pieces,  through  which  pafles  the  tube  of 
the  Microfcope,  and  which  fupport  it  near  both  ends. 
hb  The  Microfcope. 
i Its  Micrometer.  * 
k Cork,  through  which  pafles  the  glafs  rod,  and  by 
which  it  is  kept  fufpended. 
II  The 
F I G.  II. 
a a Le  fupport  auquel  eftfufpendu  le  Pyrometre . 
b Le  crochet  d’ou  il  pend. 
ccc  La  planche  de  fapin  qui  fert  de  bafe  a tout  l’appareil. 
dddd  Quatre  bras  qui  fervent  a porter  le  cadre  eeee . 
eeee  Ce  cadre. 
ffff  Le  chaffis  qui  porte  le  Microfcope.. 
gg  Deux  traverfes  dans  lefquelles  palfe  le  tube  du  Microfcope,  pour  le  foutenir 
pres  de  fes  deux  bouts. 
h h Le  Microfcope  lui  merae, 
i Son  Micrometre, 
k Liege  dans  lequel  la  branche  de  verte  eft  tenue*. 
1 
//La 
