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.

How to find out the distance of the places by the Geome∣tricall way. Chap. 15.

HOw is that done?

Most readily and easily by helpe of a terrestrial globe in this maner following. First take the distance of the 2. places by extending your compasse vpon the globe, from the one place to the other, which if you would know how many miles it com∣prehendeth, apply the same distance so ta∣ken vnto the Equinoctiall line, setting the first foot of your compasse vpon the first Meridian in that point, whereas it cutteth the Equinoctiall, then sée how many degrées of the Equinoctial are comprehended betwixt the two féet of your Compasse, and multiply those degrées by 60. & the product ther∣of shall shewe you howe many Italian miles such distance is in length. But if either of the places or both, be wanting and not ex∣pressed in the Globe, then you must learne by the tables of Pto∣lomey or of some others, as of Appian, Gemma Frisius, Oron∣tius or such like, the longitude and latitude of the said places, that done, hauing sought out the longitude of the first place in the E∣quinoctiall, turne the globe about with your hand vntill you haue brought the longitude right vnder the brazen Meridian, which being stayed there, séeke out in the said Meridian the latitude of the said place, and there set a marke vpon the globe, for there the place should stand, and doe in like maner to finde out the seconde place: Then by extending your Compasse from the one marke to the other, you shall haue the true distance, which distance if you apply to the Equinoctiall like as before is taught, the degrées thereof being multiplyed by 60. will shewe you how many miles those two places are distant one from another.

May not the distance of places be found out aswell by an vniuersall Map as by the globe terrestriall?

Yes indéed and more readily by reason that for the most parte euery Map hath his proper skale, so as you néed to do no more but to take the distance of the 2. places with your Compasse, and to

apply the same to the skale shewing the miles or leagues.

What if the Map haue no skale?

Then you must séeke out the distance by such meanes as I do shew in my Treatise of the vse of vniuersall Mappes, and also in my description of Planctius his Map.

I pray you in the meane time proceed in shewing me the third way of finding out of the distance of places which you said was per tabulas Sinuum.

The order of finding out the distance of 2. places differing both in longitude and latitude per tabu••as Sinuum is plainly set down before in the ende of my Arithm••ticke, where as I boe make a plaine description of the said Tables, and do shew the vse thereof aswel by this as by diuers other examples, wherefore I wish you to resort to that treatise and you shal haue your desire. For ha∣uing for this time sufficientlie spoken of the longitude, latitude and distance of places, and how the same is to bee found out, I thinke it méet nowe to treat of the 5. Zones, of Climes and Pa∣rallels, whereinto the amient Cosmographers thought good to deuide the earth, to the intent that euery part thereof night bée the better known how it is situated either Northward or South∣ward, whether it be hot or cold, or betwixt both, and of what length the day and night is in euery place, and what manner of shaddow the Sun yéeldeth euery where, and such like accidents, and first of the 5. Zones.