The construction of the wonderful canon of logarithms

;
Logarithmorum
Demonstratione
Bey
—
Ad
Wissenschaften
i6o
Appendix.
further, radius being made 100,000,000. The entire Canon was recomputed
by Ursinus, and full details of its construction are given in Book
II., sect. 2, of the Trigonometria. The methods employed are the
same as those laid down in the Constructio with the modifications in
regard to the preliminary tables proposed by Napier in sect. 60: A
specimen page of the Table is given on the preceding page, and reference
may also be made to my notes, pp. 94, 95.
Paris
Libraries. Un. Ed. ; Bodl. Oxf. ; Brit. Mus. Lon. ; Stadt. Breslau ; Nat.
Johann Carl Schulze wirklichen Mitgliedes der Konigl.
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Preussischen Academic der Neue
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Und Erweiterte
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Sammlung Logarithmischer,
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Trigonometrischer und
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anderer
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Zum Gebrauch Der Mathematik Unentbehrlicher
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Tafeln. ||
II. Band. ||
Berlin, 1778. August Mylius, Buchhandler
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In
Der
Briiderstrasse.
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Size 8f X 5 inches.
In this work the logarithms of the Magnus Canon of Ursinus are
reprinted to every 10 seconds in the case of the first four and last four
degrees, being the same as in the original. The logarithms from 4° to
86° are given for every minute only. Ursinus' logarithms occupy half
the lower portion of pp. 2-261 in Volume II., the title of the whole contents
of these pages being :
" Tafel
I
der \
Sinus, Tangenten, \
Secanten \
und
und hyperboli-
\
\
deren zustimmenden briggischen
schen Logarithmen \fiir die vier ersten und vier letzten Grade von 10
zu 1
10 Secunden ;
\filr den iibrigen Theil des Quadranten aber von Minute zu Minute,
\
nebet dem bten Theile der
"
Differenzen \
berechnet.
\
Joannis Kepleri
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Imp. Caes. Ferdinandi II. |
Mathematici
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Chilias Totidem Numeros
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Rotundos,
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j
Praemissi Legitima Ortus
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Logarithmorum
eorumq. usus Quibus Nova Traditur Arithmetica,
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Seu Compendium,
quo post numerorum notitiam |
|
nullum nee admirabilius,
nee