aMr. eaecurs’ S Obfrvation | 
Odom Ag Me 
ae 
*Polae’ ‘diameter 21 
33! 
” very exact. 
of fa: Mars pei ais Ligh all the time I merited, with 
all-its figures-upon. the difk appearing diftinly ; ; and, 
I think, thefe meafures may be depended upon better 
than any I have yet taken. 
my 78 35> O&. 5. tah.o’. y ease difference of ‘the diameters is very 
fenfible: 
O&. 7. gh. 43’. The flattening of the - «oles is very 
-vifible. 
‘13 hy go’. IT turned my Newtonian 7-feet refle@tor one- 
quarter round, fo as to bring the place to:look in at to 
‘the bottom; -and;-as well as the uneafy pofture 
‘would: allow, I faw the flattening of the poles the 
fame as when I looked in at the fide; power 460. 
‘g4h. 30’. With a 34 feet achromatic telefcope and a; 
fingle eye lens, I faw the difference of the polar and 
equatorial diameters-very plainly. 
“Ok. 9. 8h. 40’. Iturned my refletor go° round, fo as 
new to'look'in at the upper end, but faw not the 
leaft difference in appearances; for, returning it again 
' ‘immediately to its ufual pofition, in both cafes the 
equatorial diameter appeared a little longer than the 
other; power278, andthe evening fine. , 
I’turned the great f{peculum one quadrant in its cell, 
but appearances were not in the leaft altered; the 
equatorial diameter {till was a little longer than the 
polar one. 
‘I tried a very fine new obje&t fpeculum, and found alfo 
the equatorial diameter a little longer than the polar 
-one. 
1783, 
