shew the distance of the two citties on from another.

Vpon vniuersall mapps theire is a little more difficulty in
finding the distance of places which here must bee considered in
a threefold difference of scituation:

1 Of Latitude only.

2 Of Longitude only.

3 Of Latitude and Longitude together.

1 If the two places differ only in Latitude, and lie vnder the
same Meridian if the places lie both on one side of the Æquator,
the differences of the latitudes: or the summe of both latitudes
added together, if one place lie North and another South, being
turned into Miles giues the true distance.

2 If the places differ only in Longitude, and lie both vnder one
paralell of latitude the difference of longitude turned into
miles proportionably accordinge to the latitude of the paralell,
giues the true distance.

3 The distance of places differing both in latitude and longitude
may thus bee found out, first let there bee drawne a semicircle
vpon a right diameter noted with (_ABCD_) whereof (_D_) shall bee
the Center. The greater this Semi-circle is made, so much the
more easie will bee the operation; because the degrees will bee
larger. Then this Semicircle being drawne, and accordingly
devided, imagine that by the helpe of it, you desire to find out