PHYSICAL anp LITERARY. 141 
grees in an angle fubtended by an arc e- 
qual to CA, to the number of degrees in 
an angle fubtended by an arc equal to SM. 
: Thelog. of 57°: 29577951 0% is 1-7 581226 
The log. of SM is A-2032243 
‘The fum is 5-96: 3469 
The log. of CA 5.0000000 
The difference 0.9613469 
is the log of 9° 8%.90625 the number of ~ 
degrees and minutes in an angle fubtend- 
ed by an arc equal to SM: But, becaufe 
the arc AB is 60°, and the arc AG 1s 50° 
Bt 093797, the arc BG will be 9° 
B.. 906203 ; the difference therefore be- 
tween SM and the arc BG is 0°.000047 § 
the difference therefore is lefs than the 
354th part of a fecond. 
Mr Machin, in his folution of this pro- 
blem in. the Philofophical Tranfactions, 
Number 447. makes the anomaly of the 
excentric to be 129°. .14846, when the 
mean anomaly reckoned from the perihe- 
Jion is 120°; and therefore, ifthe mean a- 
_ -nomaly reckoned from. the aphelion be 
: : : fo "608 
