26 Dr. Hurton’s Projed for a 
we muft alfo add 1’ more at every 16, which will make 3” to 
be added at every 16th time, and 2” at every other time befides ; 
but the firft time the 3” muft be added will be at the arc or 
number 8, to have them to the neareft fecond, the repetition 
of the fraction at the arc 8 amounting to above 3 a fecond; 
and then the 3” muft be added at every 16 afterwards, vz. at 
BY) 4051 505 7 2p 005» TOAL: SEC. | 
10. But befides the conftant addition of 2” every time, and 
of 1’ more every 16th time, there muft be 1” more added for 
every 67533 time, on account of the excefs of the fraGion 
°062648062470964 over the frattion ‘o625 or ,*.: for that 
excefs is °000148062470964 which a pepe And the eafieft 
‘ 2 
method of making this laft addition of 1 at every 67534, will 
be to make the increafe of the 1 on account of the ., at an 
unit fooner for every 4223.; becaufe 16 is 4223. times con- 
tained in 67534; by which means the incremental units for 
the *, will become 1 more at that number 67534, which laft 
unit may be confidered as the increment of the former incre- 
ment for the ,*,, and fo proceed up to the quadrant; which 
will complete the fecond column of arcs to the neareft fecond 
in each number. Or this fecond column may be exaétly com- 
puted to as many decimals as we pleafe, by adding continually 
the 2” and decimals, w/z. 2°062648062470964. But at the 
middle of the quadrant, where the numbers return again up- 
wards by the right-hand, there will for once be to be added 
only the feconds and decimals anfwering to the arc *63268, 
viz. 1°30499618 feconds, that number being neceflary to make 
the numbers on the right-hand to be the exact complements 
of thofe on the left. Or it will, perhaps, be proper to make 
them to the neareft unit in the 6th place of decimals. And to 
4 | fill. 
