APPENDIX, 161
nec utilius solvendi pleraq. Problemata|Calculatoria, præsertim in Doctrina Triangulorum, citra| Multiplicationis, Divisionis Radicumq’. extractio-|nis, in Numeris prolixis, labores mole-|stissimos. | Ad | Illustriss. Principem & Dominum,| Dn. Philippvm | Landgravium Hassiæ, &c. | Cum Privilegio Authoris Cæsareo. |
Marpurgi,|Excusa Typis Casparis Chemlini.|cIɔ Iɔc xxiv.|
4°. Size 8 x 64 inches. A11, Title.A12, blank.Folding sheet with “***Ad Postul 2. Exemplum Sectionis⃜,”,A21, p. 3, Dedication by Kepler to Philip Landgrave of Hesse.A22–F31, pp. 4–45, “Demonstratio Struvctvræ Logarithmorvm.” in 30 propositions. F32–G41, pp. 46-55, “Methodvs Compendiosissima construendi Chiliada Logarithmorum.”
On G42 is the title “Chilias | Logarithmcrum | Joh, Kepleri, Mathem. | Casarei.|” H11–O2, 52 pages occupied by the table, and at the foot of the last page “Errata,” 10 lines.
Signatures. A to N in fours + O in two = 54 leaves.
Paging. 55 numbered + 1 + 52 = 108 pages, also folding sheet.
Signature O is distinctly in two, the work ending with p. 108, but the Supplementum assumes it to end with p. 112, which it would have done had sig. O been in four.
Joannis Kepleri,| Imp. Cæs. Ferdinandi II.| Mathematici, | Supplementum | Chiliadis | Logarithmorum, | Continens | Præcepta De Eorum Usu,| Ad | IIlustriss. Principem et Dominum,|Dn. Philippum Land-|gravium Hassiæ, &c. |
Marpvrgi, | Ex officina Typographica Casparis Chemlini.| clɔ IɔcXXV. |
P11, p.[113], Title.P12, blank.P21–P32, pp. 113 [115]–116[118], 4 pages, “Joannis Kepleri Supplementum Chiliadis Logarithmorum, Continens Præcepta De Eorum Usu. Lectori S.”P41, p.[119] “Correctio Figurarum post punctum in Logarithmis.”P42, p.[120] “Preterea in textu Demonstrationum jam impresso, notaviista, nondum â Typographo animadversa.” 8 lines of corrections. Q11—Dd42, pp. 121-216. The work in 9 chapters. The pages are all headed “Joannis Kepleri Chiliadis Complement,” not Supplement.
Signatures. P to Z and Aa to Dd in fours = 52 leaves.
Paging. P. [113] to p. 216 = 104 pages.
Errors in Paging. Pages 115 to 118 containing the Preface are numbered in error 113 to 116.
The first part of the work contains Kepler’s demonstration of the structure of logarithms, which is in form geometrical, some of the Ger-
