254 Mr. Herscuer’s Ob/ervations 
Te Bene ae 
Angles Firft Second ‘Angles 









= ae ae taken. eesccatee correction. {correct.} correéted 
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Jo 7 SO} 57 12 } +23 22) -4 574.74] 52 
10 G55 fae 42, Res 22 pk eae 51 
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As we have no particular reafon to fele&t one meafure rather 
than another, a mean of all the 13 will probably be neareft 
the truth; fo that by thefe obfervations, which, as we faid 
before, are reduced to the 4th of O&tober, 1783, we find the 
pofition of the axis of Mars that day to have been 55° 41’ fouth 
following. 
From the appearances of the fouth polar fpot in 1781, re~ 
prefented fig. 27. we may conclude, that its center was nearly 
polar. Wefind it continued vifible all the time Mars revolved 
on its axis; and, to prefent us generally with a pretty equal 
fhare of the luminous appearance, a {pot which covered from 
45° to 60° of a great circle on the globe of Mars could not have 
any confiderable polar diftance: however, a {mall correétion in 
the angle of pofition feems to be neceflary, which fhould be — 
taken from the meafure of the 15th of July, becaufe that 
branch of the {pot which probably extended fartheft towards 
the 
