About the copies of observations in the Hofbibliothek at Vienna and at the Paris Observatory, see above, p. 372 et seq. The three astrological MSS. [No. 1820-21, 1822, 1823, 4to] are described above, p. 145 et seq.
I. BIBLIOGRAPHICAL SUMMARY.
The titles of Tycho Brahe's own publications (including the posthumous Oratio de disciplinis mathematicis and the observations published by Snellius and in the Historia Cœlestis) have already been given in full in the text. The following is a complete chronological catalogue of books and memoirs containing biographical details or investigations of Tycho's scientific work, omitting popular accounts in which nothing new occurs.
Tychonis Brahei, Equitis Dani, Astronomorum Coryphæi, Vita. Authore Petro Gassendo, Regio Matheseos Professore. Accessit Nicolai Copernici, G. Peurbachii & J. Regiomontani, Astronomorum celebrium Vita. Editio secunda, auctior & correction Hagæ Comitum MDCLV. 4to, lx. + 384 pp. [of which 287 pp. about Tycho Brahe; 1st edition published in 1654; pagination of the two editions agree. About Gassendi's sources, see his letters in his Opera, vol. vi. pp. 518-527].
Encomion Regni Daniae. Det er Danmarckes Riges Lof. Af J. L. Wolf. Kjöbenhavn, 1654. 4to [pp. 525-529 about the island of Hveen].
Le Grand Atlas ou cosmographie Blaviane, en laquelle est exactment descritte la terre, la mer et le ciel. A Amsterdam, 1663, fol. [Large map of Hveen, with letterpress in vol. i. p. 61 et seq., and figures of Tycho's instruments.]
P. J. Resenii Inscriptions Hafnienses, Stellæburgenses, Uraniburgenses, &c. Hafniæ, 1668. 4to [p. 310 et seq. are given a number of inscriptions at Uraniborg and Stjerneborg, and a letter from Tycho Brahe to Peucer, all of which are reprinted by Weistritz in his first volume].
Voyage d'Uranibourg ou Observations astronomiques faites en Danemarck, par M. Picard. Paris, 1681, fol. [Reprinted in the Recueil des observations faites en plusieurs voyages, Paris, 1693, fol.; and in Picard's Ouvrages de inathematiques, Amsterdam, 1736, 4to, pp. 61-99.]
Epistolæ ad Joannem Kepplerum scriptæ. Ed. M. G. Hanschius. Lipsiae, 1718, fol. [On pp. 102 et seq. letters from Tycho, see above, p. 290 et seq.]
Pet. Dan. Huetii, Episcopi Abrincensis, Commentarius de rebus ad eum pertinentibus. Amstelodami, 1719. 12mo [pp. 81-89 about Tycho Brahe and Hveen].
Tychonis Brahe relatio de statu suo post discessum ex patria in Ger-