1800.] 



ilisiory of Astronomy^ by Lalande. 



33 



time, and dimininj the riflt of error. 

 Thefe Tables will foon make their ap- 

 pearance. 



Tlie new Table of Refractions, by M. 

 de Laplace, which will appear witli the 

 Tables of the Sua, gives li\-tentl>3 of a 

 fecond, at 15° more than Bradleys ; but 

 De Laplace apprizeis allrononicrs that 

 difcordaaccs have been frequently found 

 between the two loliticcs, becaufe the 

 tlierniometer has been placed within an 

 obfeivatory, iuftead of being placed with- 

 out, but out of the fun. 



llie obfcrvations of the two foKliccs, 

 and of the two equinoxes, made by iVL 

 Dcl.inibre with a repeatini;-circle, during 

 fevcral days, have given hira the confir- 

 mation of the epochs and of the ob- 

 Lquity of the ecliptic, vi luch he has em- 

 ployed in his new Tables. 



Epoch for 1800, 9' 10° 23' 32" &", 

 kfs by S" than in his fiift Tables. Mean 

 obliquity 2."° 27' 57", greater by 4" than 

 in the Tables of my third edition, which 

 Lave been hitherto ufed. 



M. Dclambre has completed the print- 

 iaig of the lirit volume of his great work 

 on the Meridian, in 750 pages. It is in- 

 titled JJ<7/e clu Siijlhnc MiiiiCjUe Decimal, 

 0ii Mtfiire (k I'Arc clu Meridkn, 6ic. It 

 contains all the triangles fonned irom 

 Dunkirk to Barcelona. The fecond will 

 contain the bafes, the azimuths, the lati- 

 tudes and the calculations (jf the triangles. 

 There will probably be a third. 



The new Tables of Jupiter an'd Saturn, 

 calculated by M. Bouvard, are hnilhed 

 and going toprefs. 



Tiiote of Mercui-)', Venus, IMars, com- 

 pofed by Lalande the nephew, will im- 

 mediately follow. M. Delambre hiis re-^ 

 compiifed the Tables of the Satellites ; 

 and we lliall have a new and complete 

 collectioi'i of Aftrouomical Tables pub» 

 liflicd by the Board of Longitude. 



We have received the Berlin Memoirs 

 for 1802, vv'hich contain Obfcrvations by 

 il. Rode, and Calculations relative to the 

 Planets Piazzi and OlLers, 



M. Bouvard has continued at the Ob- 

 fcrvatory his Series of Obfcrvations, with 

 excellent infiruments, and they will ap-' 

 I'car in the Connoi(funce dts Tnitps for 

 iy08, which is printing in the form of the 

 C'rcgorian Calendnr, conformably to the 

 ft'iKiiUo-coiifullc of il.e 9th of September, 

 which has l'u|)pre(Ved the republican ca- 

 lendar, and which is printed iu our little 

 ^ turn /lire. 



In the Bulletins of the Academy of* 

 Sloiitpellier there are Obfervations by 

 ^I. Poitevii) and M.de I'lauirer^ues. 

 31o;;'nji.T Mvu., No. 14C. 



M. Vidal, direftor of the Obfervatorj 

 of Touloufe, has font us a large collc(^tioii 

 of obfervations made by him in lii(i-), 

 which atteft the perfevcring zeal of that 

 able aftro))onier. 



The Ephemerides of Vienna for the 

 year lOOG contain a great number ot' lon- 

 gitudes determined by eclipfes, as a fe- 

 quel to the great work of M.Triefnecker; 

 a Memoir by M. Burg, to prove that 

 Bradley's refractions ought to be in- 

 creafed ; Obfervations made at Vienna, 

 Buda, Prague, Crems-MLin(ler,Carinjurg, 

 Naples, Palermo, Kalilhon, Amfterdam, 

 Gotlui, Milan, Munich, and Briinn, ti» 

 the South of Ohniitz, a place which has 

 become very remarkable to us, on ac- 

 count of tlie entry of our Emperor into 

 Vienna on the ICth of November. 



M. Bode's Ephemerides likewife con- 

 tain a grej.t number of Obfervations 

 made at Berlin, \ ienna, Peterfburg, Bre- 

 men, Brellau, Prague, Wilna, Crcms- 

 Miinller, Palermo, Upfal, Huth, and 

 Dantzig, and Calculations relative to the 

 three new Planets. This volume Uicws, 

 like the preceding, how important it is 

 that aftronomcrs Ihould undcritand ( Jer- 

 man. I have feen from it \\ith pleafure, 

 that M. Bode appro\ es the term rgiat- 

 tudc which I have fubftitiited for right- 

 afcenfion, that we may have a iimple 

 name, and not one which fignifies a thin|j 

 that we nei er fee. 



M. Poczobut and M. Trefchka, afiro- 

 nomers of the L^nivcrlity of Wilna, have 

 tranfmitted to us a great number of Ob- 

 fervations of tl;e new Planets, made in 

 180o and 1804, with excellent inftru- 

 ments. 



M. Scarpellini has fent from Rome 

 Obfenations ma3o at the Obfcrvatory of 

 the Duke de Scrmonata, the Eclipfes of 

 the Sun and Moon, and the Tranlits of 

 Mercury over the Sun. 



Pope Pius VII. Chiaramonte, whofe 

 refidence at Paris produced fuch an 

 agreeable feniation, gave me a commii- 

 lion to have made for him a circle, a pen- 

 dulum, and an achromatic telefcope, for 

 the Roman College, which Meflrs. Caleii- 

 drelli and Conti have rendered interelt- 

 ing, and which Cardinal Litta, prefect of 

 the ftudies of the Roman College, parti- 

 cularly patronizes. 



I'he allronomers of Florence hnvc com- 

 miffioncd me to fend them a chronome- 

 ter by Berthaud. 



M. ^Ciccoiini, an aftronomer of Bo- 

 iQffna, has publiflied a Memoir of the 

 Eclipfe of the Sun oil the 11th of Febru- 

 ary 1304, which wai fujipoild to have 

 £ beea 



