oA8 Mr. Hersowey’s Obfervations- 
plainly denotes, that they. were both in the fame half off 
a {phere orthographically. projected, and divided by a -plane- 
pafiing through the axis of Mars and the eye, but that neither 
of them were polar. Now, 4 line drawn through two points 
not far from oppofite each other, both in the fame hemifphere, 
and both removed from the poles of it, muft approach more to. 
a-parallelifm with the axis, than a line drawn. through either 
of them and the center. 
1779, May 9. There being: no lisipht {pots ee which to jie 
of the pofition of the poles, it is eftimated from a. 
well known dark equatorial fpot, with a line drawn. 
through the figure to denote a parallel of declina- 
tion. By very rough eftimation. it is about: Ae 
fouth preceding. 
May 11. The fame figure, being drawn again in ano-- 
ther fituation, and alfo with a line giving a parallel 
of declination, points out, by the fame rough efti~ 
mation, 62° fouth preceding. 
. 4781, June 25. 11h. 35’. The pofition of the fpots @ and 4, 
fig. 3. with regard to a parallel of declination, mea- 
fured with a micrometer 74° 32’. The fpot @ was. 
fouth preceding, and 4 north following. 
July 15. toh. 12’. The angle of pofition, of the cen- 
ter of the {pot 4, fig. 9. through the center of the 
difk, 74°.18/ fouth preceding. 
1783, Auguft 16. Pofition of the fpot a, 64° fouth following 
the center; but as the planet is not full, the center 
becomes dubious, and the meafure therefore may not 
be quite accurate, though taken with a 20 feet 
refleCtor 3, power 200. bl 
Sept. 
— 


