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 the houre of the night by the Globe. The 25. Proposition.

HAuing set the Globe at your Latitude, rectifie the Index of the houre-whéele by the 7. Propo∣sition, then hauing taken the Altitude of some starre that you knowe, and is in the Globe with your Astrolabe or Duadrant, bring the quarter of Altitude vnto the starre, be it in the East or West, according as you found the starre to be in the firmament, not leauing to turne the Globe vntill you haue made the starre to haue the like Altitude in the Globe vpon the quarter of Altitude, and also the like situation that you found it to haue in the firma∣ment

by your Astrolabe or Duadrant, & staying the Globe there, the Index of the houre-whéele wil shew the houre: As for example, in the yeare 1590. the first of Ianuarie the sunne being in the 22. of Aquarius, I hauing with my Astrolabe found that the starre called Canis maior, that is to say the greater dogge, was eleua∣ted aboue the Horizon in the East part of the firmament 20. de∣grées, I brought the quarter of Altitude to the East side of the Globe, not leauing to turne the Globe vntill I had made the star to méete euen with the 20. degrée of the quarter of Altitude, and there staying the Globe, I found by the Index of the houre-whéele that it was 8. of the clocke at night, and a quarter past.