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tiones [apographæ] cometarum qui annis 1582, 1585, 1590, 1593 et 1596 apparuerunt.[1] 4to. [No. 1 826, 4to.]

2. Copies of Observations, Miscellaneous Computations, &c.

Observationes Lipsiæ annis 1563-65, Rostochii 1568, Augustas Vindelicorum 1569-70, Heridsvadi, Hafniæ et in insula Hvena 1573-81

factæ, præmissis excerptis ex observationibus G. Frisii et Regiomontani.[2] 4to, 280 ff. modern binding. [No. 1824. 4to.]

Observationes septem Cometarum 1577-96. 4to. [No. 1827, 4to.]

Fasciculus continens theoriam Solis per Observationes Lunæ ad ilium et fixas, Lunaria 1582, 1586, 1590, 1593. Observationes Veneris 1586, Jovis 1593, Saturni 1590. 4to, 145 fol., modern binding. [No. 1830, 4to.]

Computatio observationum Solis, Lunæ et planetarum 1599 et 1600 & comparatio cum tabulis. 4to. [No. 1829, 4to.]

Fasciculus observationum Brunei, variorum annorum ex quibus 1590 1598, 1599 et 1600 expressi sunt. Addita sunt excerpta ex quodam libro MSo ex collegio Pragensi a M. Baccliatio Tychon, communicata. 4to, 478 ff., modern binding. [No. 1828, 4to.][3]

Tychonis Brahei stellarum octavi orbis inerrantium accurata restitutio. [No. 306, fol., presentation copy to King Christian IV.]

Idem liber [No. 307, fol., presented to Johannes Adolph, Bishop of Lübeck.]

Observationes qusedam astronomicse habitae 1589 per Quadrantem orichalcicum Tychonis Brahe, divisionum satis capacem, in diversis locis Daniæ ad eruendas eorum Poli elevationes. 4to. [No. 1831, 4to, by Elias Olai, see above p. 123, footnote.]

Collectio observationum Tychonis Brahei in L. Baretti Historia Coelesti omissarum per Erasmum Bartholinum. In Folio.[4] [No. 310,

fol., includes the observations of comets.]
  1. The original observations of the comets of 1582 and 1585 are in the folio volume for 1582-86.
  2. These excerpts fill two leaves. There are also some notes on the comets after the year 1500, and among the observations are astrological notes and comparisons with ephemerides. In several places the observations have afterwards been verified or reduced by means of the great globe, e.g., under 1570, 5th March, where there is written in the margin: "Manu Christiani Severini Longomontani recentius scriptum;" and on the next page: "Manu Tychonis, sed recentius, scriptum." This volume has often been quoted above in Chapters ii. to v. It is the volume referred to in Connaissance des Temps for 1820, p. 386.
  3. I have not seen this volume myself. Dr. Bruun informs me that it has originally consisted of two bundles, the first begins "Observationes ☉ Die 27 Februarii," and consists of 260 leaves; the second is headed "Astronomicæ Observationes anni 1598," and consists of 218 leaves. It is written in the same hand as No. 1829, 4to. Bugge's No. 6 (p. xvii. last two lines) could not be identified, and the last and third last items on Bartholin's list (Werlauff's Historiske Efterretninger om del store kgl. Bibliothek, 1844, p. 54) are not now at the Royal Library. One of these is an 8vo volume of observations, 1563-74 (originals?), which probably was lost in Paris, or on the way back in 1707.
  4. Bartholin's corrected copy of Barrettus is mentioned above p. 374.