M. Blundeuile his exercises : containing eight treatises, the titles whereof are set downe 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 nauigation ... To the furtherance of which arte of nauigation, the said M. Blundeuile specially wrote the said treatises, and of meere goodwill doth dedicate the same to all young gentlemen of this realme.