Pyrometry  and  Areometry , See.  553 
The  proportions  are  not  determined  in  this  figure, 
which  ferves  only  to  help  the  explanation  of  the  princi- 
ples upon  which  a comparable  Areometer  might  be  con- 
ftrufted. 
II  n’y  a rien  de  determine  dans  les  proportions  de  cette  figure,  qui  fert  unique- 
ment  a rendre  plus  intelligible  les  principes  fur  lefquels  on  pourroit  conftruire 
un  Ar  cometre  comparable • 
Vol.  LXVIIL  Xxx 
