PHYSICAL AND LITERARY. i^^- 



The log. tang, of 15° is 94280525 



The difF. of the logs, of AS, SP is 0.0146892 



The difference 9.4133633 



is the log. tang, of 14° 3i'.367042i, half the 

 difference of the angles CSB, CBS ; there- 

 fore the angle CSB, that is the angle A CD, 

 is 29° 3i'.367042 ; therefore the anomaly of] 

 the excentric is nearly 29° 3i'.367042i, that 

 is 29" -3 i'.22".o22526, which agrees very 

 nearly with Dr. Keil's numbers in the 

 forefaid Ledture. 



B X A MP L E VI, 



Again, in the earth's orbit, fuppofe the 

 mean anomaly to be 60°, it Is required to find 

 the anomaly of the excentric, 



The log. tang, of 30° is 9.7614394 



The diff. of the logs, of AS, SP is 0.0146892 



The difference 9.7467502 



is the log. tang, of 29° io'.o8i873, half the 

 difference of the angles CSB, CBS; there- 

 fore the angle CSB, that is the angle ACD, 

 is 59° io'.o8i873 ; therefore the anomaly of 

 the excentric is nearly 59" io'.o8i873. ' 



