on the Planet Mars... - 453 
for Su being parallel to 'T m, and fuppofing the axis of Mars 
to preferve its paralielifm while it moves from m to uw, appear- 
ances of Mars at »% to an “are at S, mult be the fame as they 
are at a to an eye at T. | 
Pele following table contains the refult of calculations re- 
lating to the angles of fig. 28. In the frft column are the 
times when the obferv ations were made. In the fecond, the 
angles as they were taken. In the third column are the quan-~ 
tities of the angles Q, g, calculated from the geocentric lon- 
gitudes contained in the third column of the third table. In 
the fourth column are.the corrections for the fituation of the 
fpot in the circle of latitude obtained from the fines of the 
paeles.? m the fifth column of the third table. In the fifth 
are the corrections mats s on account of the change of fitua- 
days on which the Be. were taken Ae are at 
from the third column of this table, and I have aflumed the 
4th of October, ‘as being the obfervation neareft the oppofi- 
tion, to which Ihave reduced the other meafures. -In the fixth — 
column. are the angles of the fecond, corrected by the quan- | 
tities contained in the fourth and fifth columns, applied accord- 
ing to their figns, . , 7 
MPABLE 
