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.

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Title
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.
Author
Blundeville, Thomas, fl. 1561.
Publication
London :: Printed by Iohn Windet, dwelling at the signe of the crosse Keies, neere Paules wharffe, and are there to be solde,
1594.
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Subject terms
Mercator, Gerhard, 1512-1594.
Plancius, Petrus, 1552-1622.
Blagrave, John, d. 1611.
Astronomy -- Early works to 1800.
Arithmetic -- Early works to 1900.
Trigonometry -- Early works to 1800.
Early maps -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A16221.0001.001
Cite this Item
"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." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A16221.0001.001. University of Michigan Library Digital Collections. Accessed October 31, 2024.

Pages

How to finde out the Longitude of any Region. The 49. Proposition. (Book 49)

HAuing found out the place of the Moone in the Zo∣diaque, you must first know the very houre of her being in that place, and then learne by some Ephe∣merides or by the Tables of Alfonsus, at what houre the Moone doth enter into the selfe same de∣grée of the Zodiaque in some other Region or Towne whose Longitude you alreadie knowe, and hauing redu∣ced the houres to 24. take the lesser number of houres out of the greater, the remainder whereof must be reduced out of houres and minutes into degrées thus: Multiply the houres by 15. and the minutes of houres by 4. so shall you haue the degrées of the Equator contained betwixt the two Meridians. And such di∣stance so intercepted is called the difference of Longitude, which difference you must adde to the knowne Longitude if the houres in that place were more in number, but if the houres were lesse in number, then you must subtract the foresaide difference from the knowne Longitude, so shall you collect the vnknowne Longitude of that place or Region which you séeke, and how far it is distant from the fortunate Iles.

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