M. Blundevile his exercises containing sixe treatises, the titles wherof are set down in the next printed page: which treatises are verie necessarie to be read and learned of all yoong gentlemen that haue not bene exercised in such disciplines, and yet are desirous to haue knowledge as well in cosmographie, astronomie, and geographie, as also in the arte of navigation ... To the furtherance of which arte of navigation, the said M. Blundevile speciallie wrote the said treatises and of meere good will doth dedicate the same to all the young gentlemen of this realme.

Another way to knowe the distance of any two stars, their Longitudes and Latitudes being first knowne, and also by that meanes to finde out the distance betwixt any two places vp∣pon the earth. The 28. Proposition.

FIrst séeke to knowe the difference of their Longi∣tudes by subtracting the lesser Longitude out of the greater, then count that difference from the outermost Meridian of the Mater towardes the Center, and marke well that Meridian at which your account endeth, then number vpon the limbe of the Mater from the Equinoctiall the greater Latitude either

Northward or Southward according as the Latitude is, and to that point bring the Zenith of the Rete, then vpon the selfe same Meridian before marked count from the Equinoctiall the lesser Latitude, and looke what Azimuth passeth through that point, for the degrées which are contayned betwixt that point and the Ze∣nith shalbe the distance: and thus doing you shal find the distance betwixt Oculus Tauri & Canis maior to be 46. degrées and 15′· and the distance betwixt London and Venice to be 12. degrées and 20′· which 12. degrées being multiplyed by 60. maketh 720. miles, whereto if you adde for the 20′· 20. miles, it will make in all 740. miles.