PHYSICAL AND LITERARY. 129 



the log. of 20589 is 4.31.36353 



The log. fine of 50° 5 1'.093797 is 9.8895890 



The fum is 14.2032243 



The log. of rad. 19 • 10.0000000 



The difference 4.2032243 



is the log. of SMi Again, as GA to SM, fo is 

 ^y°. 2957795, Gfr. the number of degrees in. 

 an angle fubtended by an arc equal to CA, to 

 the number of degrees in an angle fubtended 

 by an arc equal to'SM. 



iThe log. of 57°. 2957795, ©*<:. is 1.758 1226 

 The log. of SM is 4.203224;^ 



The fum is 5.9613469 



The log. of CA 5.0600000 



The difference 0.9613469 



is the log. of 9° 8'.9o625 the number of de- 

 grees arid rriinutes in an angle fubtetided by an 

 arc equal to SM : but, becaufe the arc AB is 

 60°, and the arc AG is 50° 5i'.693797, the 

 arc BG will be 9° 8^.906203 ; the difference 

 therefore between SM and the arc BG 

 Vol, II. R is 



