the distance betwixt London and Ierusalem, which Citties are
knowne to differ both in longitude & latitude. Now, that the true
distance betwixt these two places may be found out, you must
first substract the lesser longitude out of the greater, so shall
you find the differences of their longitudes, which is 47.
degrees. Then reckon that difference vp[~o] the Semi-circle,
beginning at (_A_) & so proceed to (_B_;) & at the end of that
difference, make a marke with the leter (_E_) vnto which point by
your ruler, let a right line be drawne from (_D_) the center of
the Semi circle. This being in this sort performed, let the
lesser latitude be sought out which in 32 degrees, in the fore
said semicircle, beginning your accompt from the point (_E_) and
so proceede towards (_B_), and at the end of the lesser latitude
let another point be marked out with the letter (_G_), from which
point, let there be drawen a perpendicular line which may fall
with right Angles vpon the former line drawen from (_D_) to
(_E_), and where it chanceth to fall, there marke out a point
with the letter (_H_): This being performed let the greater
latitude which is 51 degrees 32 minuts, be sought out in the
semicircle beginning to reckon from (_A_) towards (_B_) and at
the end of that latitude set another point signed out by the
letter (_I_) from whence let there be drawen another
perpendicular line that may fall with right angles vpon the
diameter (_AC_): & here marke out a point with the letter (_K_),
this done take with your compasse the distance betwixt (_K_) and
(_H_) which distance you must set downe vpon the diameter (_AC_)
placeing the one foot of your compasse vpon (_K_) and the other
towards the center (_D_) and there marke out a point with the
letter (_L_); then with your compasse take the shorter
perpendicular line (_GH_,) and apply that widenesse vpon the