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.

Of the shaddow of the Sunne, and how to know therby the houre of the day in any latitude by help of an vniversall diall. Chap. 48.

MY former order now requireth that I should speake somewhat of the shadow of the Sun, and of the diuer∣sitie therof, according to the Clime or Parallel vnder which you sayle. But for so much as I haue shewed you in the second part of my Sphere from the 20. to the 27. chap∣ter of the same, what diuerse shadowes the Sunne yéeldeth in di∣uerse Climes and Parallels, and also haue shewed what Vmbra recta and Vmbra versa is in the 40. Chapter of my Treatise of the Astrolabes: I minde not here therefore to make a new recitall therof, but only to shew how you shall find by his shadow the true houre of the day in euery Latitude by a generall Dyall, made to serue in all Latitudes, of which Dyals, though I haue séene di∣uerse and of diuerse shapes, yet none liketh me better then that which William Borne setteth downe in his Regiment the 21. Chapter, and calleth it the Equinoctiall Diall, which serueth not onely to know the houre of the day by the shadow of the sunne, but also the houre of the night by the shadowe of the Moone when she shineth cleare, which Diall being of small charge, I would wish all Mariners to haue: The making and vse whereof is so plaine∣ly set downe by himselfe in the foresaid Chapter as I thinke it su∣perfluous to set it downe againe here. And thus ending with the the sunne, I will now turne my pen to the Moone.