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.
Rights/Permissions: To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
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.
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 May 14, 2024.

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1 To find out the declination of the Sunne, the place thereof being knowne.

MVltiply the Secant of the complement of the greatest declination by the totall sine, and diuide the product by the sine of the sunnes distance from one of the equinocti∣all points, the quotient is the Secant of an arch, whose complement is the declination of the sunne: for example, suppose that the sunne be entering into ♉ to finde the decli∣nation therof, first I multiply 25112030 the Secant of 66. degrées 32′· (which is the complement of 23. degrées 38′ the greatest declination) by 10000000. the product is 251120300000000. which being diuided by 5000000. (the sine of 30. degrées the sunnes distance from the equinoctial point) the quotient is 50224060. for which number I séeke in the table of Secants, the arch answering vnto it, is 78. degrées 32′· the complement whereof is 11. degrées 29′· which is the declination of the sunne.