[1197] 
diftance of fuch Parallel, (in the Chart) from the E- 
quatof. 
26* For finding this diftance, anfwering to each de- 
gree and Minute of Latitude,- Mr. ^r/^fo fas the moft 
obvious way) Adds all the Secants (as they are found 
calculated in the Trigonometrical Canonj from the 
beginning, to the degree or Minute of Latitude pro- 
pofed. 
27. The fum of all which except the Greateft, (^an- 
fwering to the Figure Infcribed ) is too Little : The 
fufii of all except the Left, (anlweringto the Circum- 
Icribed,) is too Great, ("which is that he follows:) And 
it would be nearer to the truth than either, if (^omit- 
ting all thefe) we take the intermediates; for Min. 
h H> 3h &c. or (the doubles of thde) Min. 3, 7, 
&c. Which yet (becaufe on the Convex fide of the 
Curvej would be fomewhat too Little. 
28. But any of thefe ways are exadl enough for the 
ufe intended, as cieating no fenfible difference in the 
Chart. 
29. If we would be more exad; Mr. Oughtred Ai- 
red:s ("and fo had Mr. Wright done before himj to di- 
vide the Arch into parts yet imaller than Minutes, and 
calculate Secants luting thereunto. 
30. Since the Arithmetick of Infinites introduced, 
and ("in purlaance thereofj the do£lrinc of Infinite 
feries (for fuch cafes as would not, without them, come 
to a determinate proportion; ) Methods have been found 
for fquariog fome fuch Figures; and (particularly) 
the Exterior Hyperbola ( in a way of continual ap- 
proach) by the help of an Infinite feries. As, in the 
Fhilofophical Tranfailions, Numb. 38, {'for the Month 
oi Jiigufi 166%,) And my BookZ)^/-*^/©^^, Cap 5-. prop. ^i. 
31. In Imitation whereof, it hath been defired (T 
find) by fome, that a like Quadrature for this Figure 
of Secants (by an Infinite feries fitted thereunto) might 
be found* ^ 32. lu 
