IS 05.] 



H'ljiory of A/tronomy for 1804. 



133 



fult. It is his intention to meafure fsve- 

 ral degrees. 



The " Connoiffance des Terns" for the 

 yeir 15, which appeared towards the con- 

 clufion of this year, contains a great nuna- 

 ber of memoirs, tables, obl'ervaiions, and 

 calculations, by Meffrs Delaplace, De- 

 lambre, De7nck, Chornpi e, MelTiei', Vidal, 

 Guerin, Finugergues, Lalande, Burck- 

 har3t. Due la Chapelle, Olbers, Thnlis, 

 Mougin, Schrbcer, Keizer, Caiandreili, 

 and Conti ; the Life of Bernier 5 the Hif- 

 tory of Aftronomy for 1803 ; the obfer- 

 vations of the planets Piazzi and Olbers. 



We have received, rather late, it is 

 true, an interelling book, publiflied in 

 1 800, the third volume of *' Aftronomical 

 Eflays," by John Jerome Scb:oti;r. It 

 contains refearches relative to the planet 

 Jupiter, to the rotation of Mercury, and 

 to comets. 



The eleventh volume of the Italian So- 

 ciety contains a Supplement to the Cata- 

 logue cf Stars by Cagnoli, of which we 

 fpoke in terms of praile iaft year : a me- 

 moir by M. Piazii on the obliquity of the 

 ecliptic, the r; .'ult of which agiess with 

 that found a>. Paris ; the mean obliquity 

 for i3oo, ^■t,° 27' 5^", inftead of 59", for 

 tlie fummer folftices, and fmaller by 9" 

 inftead of 6" for the winter folftices. It 

 likewife contains the obfervations of 

 MeiTfs. Chiminrllo and Caffella. 



In the feventh volume of " Notices and 

 Ex rafls of Manufcripts of the National 

 Library," are 240 p^ges of obfcrvations 

 and tables of Ibn Junis, in Arabic, with a 

 tranflation by M. CaufiTin, whofe labour 

 has been extremtly uleful for the theory 

 of file Moon. 



The printing of the •' Tables of the 

 Sim," by M. Delambre, has been com- 

 menced. In thefe are many new equa- 

 tions, all the elements of which have been 

 verified by new obfervations. When 

 ihtfe tables are finifhed, thofe of the Moon 

 will be printed, and afterwards thofe of 

 the planets. 



M. Cagnoli has publifhcd a fecond edi- 

 tion of his " Trigonometry" in Italian, 

 with fome interefting aJditiors. 



M. Bict has given :in " Abridgment of 

 Phyfical Altionomy," for the ufc of fcmi- 

 naries, containing an ai)ridgment of all 

 the clilcoveries delciibed in the " Meca- 

 D'qiie Celefte" of M. Delaphce, and the 

 principles of aftronomy as in my Abridg- 

 ment. 



_ M. Bode has publifhed the " Epheme- 

 lides tor i8o6." Hs his introduced ma- 



ny obfervations by M. Mechain at Paris, 

 M. Triefnecker at Vienna, MelTrj. David 

 and Bitner at Pi ague, M. Eei k-r at Mif- 

 tau, M. VVurmat Blni'^eurcn, M. B.iggi 

 at Copenhagen, M. Derfiinger at Kreml- 

 miinfter, Mcffs. Schroter and Hinl^n* at 

 Lilientlial, M. Jungnitz at Brcflau, M. 

 Be zenberg at Himburg, M. Gaiifs at 

 Brunfwick, M. Oibeis at Bremen, M. 

 Fritfch at (<nedlinbing, M. SsyfTL-rt at 

 DrafJen, M. de Enie at Zell, M. Kautfch 

 at Leutomifchel, M. Schubert at Pcierf- 

 burg, M. Brandes atEckwarden, M.KIu- 

 gel at Hiile, M. Kock at Danzig ; letters 

 from M. Piazzi and many others relative 

 to aftronomy ; eclipfes of ftars, and ob- 

 fervations of neiv planets. This collec- 

 tion, written in German, convinces me 

 more and more of the neceiTity of acquir- 

 ing that language. 



M. Harding has remarked very rapid 

 alterati' ns in the lioht of the planet Ol- 

 bers ; they were in general very percep- 

 tible in the interval of 40' of time. He 

 announces that M. Schroter and he have 

 always found the ring of Saturn without 

 rotation till the moment of its difappear- 

 ance. 



M. Benzenberg announces that he has 

 feen Jupiter in broad day ; and he men- 

 tions perfons who can fee Regulus ard 

 Others the fatelli'.es of Jupiter wichout te- 

 lefcopes. 



M. Wurm has found the equation of 

 the Sun by Venus to be ii"6, and thefize 

 of Venus as 1,06 to the earth ; but M. 

 Delambre, by a great number of observa- 

 tions, made it only o"96. The obferva* 

 lions of Bradley and Malkelyne produced 

 the fame refjit. 



The '•' Epliemerides of Vienna fof 

 1805" contain new Tables of M.irs by M. 

 Triefnecker ; the perturbations cilculattd 

 by M. Schubert at' Peterft)i;rg ; 77 paees 

 of osfervations made at Vienna by MelT. s. 

 Triefnecker and Bur?, at Buda 1^y Meffr?, 

 Tauclier and Hul'man, at P:agie by 

 M-flVs. Dav;danJ Bit'ner, at Crcml'innn- 

 fter by M. Dcrflinger, at Cvtcof by M, 

 Siiiadecki, at Padua by M. Ciiimincllo, 

 at Ratifbon by iM. Heinrich, at Paris by 

 M. Mechain, at Upfal by Mc.Trs. Prf.fpe- 

 rin, Swanberg, Mallet, Holinquift, Trig- 

 den, Rotheram, Nordinarck, Troil, Lan- 

 defech, and Biedman, at Lund by M. 

 Lidtgren ; calculations by M. Bcde, 

 allronomer of Carlfburg ; and many ob- 

 fervations in France, extraiiled from the 

 <* Connoiffance des Terns." 

 (To beeonlinueJ.) 



For 



