The construction of the wonderful canon of logarithms

Sumptib.
Magnvs
Anno
diductus.
Triangulorum
G.
Et
158 Appendix.
Coloniae
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CIO IDC XXV.|
M. Guttij, tipys
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Rungij descripta.
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[The above is engraved on a half-open door, forming the centre of a title-page elaborately
engraved by Fetrus RoHos.]
4°. Size 7f x5| inches. ):( i', Title. ):( i^ blank. ):( 2'- ):( 4^ 6 pages,
Dedication to Dn. Georgio Wilhelmo Marchioni Brandenburgico, dated 1624. Al'-
Ll4^, pp. 1-272. Trigonometria, in three books. Liber I., " De Triangulis,
eorumq. affectionibus." ; Sectio Prior, "Z'e Triangulis Planis." ; Sectio Posterior,
" De Triangulis Spharicis." . Liber II., " De Constructione Canonis Triangulorum ;
cjusq. usu in genere." ; Sectio I., " De Constructione Canonis Sinuum." ; Sectio II.,
" De Constructione Tabula Logarithmorum." ; Sectio III., "2?^ usu Canonis Logarithmorum
in genere." . Liber III., " De Usu Canonis Logarithmorum in utraq,
Trigonometrid. " ; Sectio I. ,
" De Mensuratione Triangulorum Planorum sive Rectilineorum."
;
Sectio II., " De Trigonometrid Spharicorum."
Signatures. ) : ( and A to Z and Aa to LI in fours =140 leaves.
Paging. 8 + 272 numbered = 280 pages,
Benjaminis Ursini
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Sprottavi Silesi |
Mathematici Electoralis
Brandenburgici Canon Logarithmicvs
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Illustr. Neperi, p. m. novissimo, Sinu
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Ex Voto & Consilio
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toto 1 00000000. ad scrupulor. (
secundor, decadas |
usq'. |
Vigili
studio & pertinaci industrii
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Keppler. Harmonic. Lib. IV. cap. VII. p. 168. — [followed by extract of 8 lines.]
Colonise, |
Typis Georgij Rungij, impensis & sumtibus Martini
Guttij
I
Bibliopolae, Anno M. DC. XXIV.
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Ai', Title. Al^, blank. A2'-Lll2'', The Table occupying 450 pages.
Lll3^, " Emendanda in Canone," 35 lines. On LU32 is printed " Berolini, \
Excudebat Georgius Rungius Typographies, \
impensis &' sumtibus Martini Guttij
\
Bibliopola Coloniensis. do Icd XXIV. ". LII4, blank.
\ |
Signatures. A to Z and Aa to Zz and Aaa to Lll in fours=228 leaves.
Paging. 2 + 450 + 4=456 pages not numbered.
Colonia, the place of publication, is Koln a. d. Spree or Berlin.
The second and third books of the Trigonometria deal with the subjects
treated of in Napier's Descriptio and Constructio, these works
being largely made use of by Ursinus, who speaks of Napier as a
Mathematician without equal (see p. 131, 1. 5). The references in the
text are to the Lyons edition of 1620 (see p. 178).
The Magnus Canon contains the logarithms of sines for every 10" in
the quadrant. They are arranged in a similar way, and are of the same
kind as those in Napier's Canon of 16 14, but are carried one place
further,