<= 2 eee ee eS 
1202. ] 
7" are to be deduéted from the longitudes 
ate by our tables.. But Citizen De- 
ambre has undertaken to calculate feven 
or eight hundred of Bradley’s obfervations, 
by applying to them eight or ten new 
equations furnithed by caiculations of the 
attraction. The eccentricity of Jupiter 
and the earth give equations for the fun 
which go to eight org”. Thus we fhall 
foon have new tables of the fun, ftill more 
accurate than thof of Delambre, to which 
it had been fyuppoled that nothing could be 
added. 
As to Mercury, the error of my tables 
is not greater than. 10%; from fome ob- 
fervations on Venus made the 24th of 
May, the error of the tables appears to be 
equal to + 30”, which indicates that 12” 
mult be taken from the epoch, but that 
the equation of the orbit is right. 
The Connsifjance des Temps, for the 
Year 13804, which will fhortly be pub- 
lithed, contains every thing that the pur- 
fuit of aftronomy has yielded for the lat 
ycar:—fome curious inveftigations relat- 
ing to the theory of the moon,~ by La- 
place; new tables of Mars, by Lefrancais 
Lalande; a new catalogue of ftars, mak- 
ing their number 11,300, a feries of which 
are to be found in tlie preceding volumes ; 
obtervations, tables, and important cal- 
culations, by Mechain, Delambre, Cha- 
brol, Vidal, Thulis, Flaugergues, Cic- 
colini, Duc Lachapelle, Burckhardt, Ber- 
nier, Humbolt, Quénot, and myfelf, to- 
gether with notices of the moft celebrated 
works which were publifhed during the 
Cais. 
if The Ephemeris of Vienna, for 1802, 
contains a fourth feries of determinations 
of longitude, by M. Tricfnecker, who 
calculated all the eclipfes of the fun and 
ftars which have been obferved, a confs- 
derable and important labour which he 
continues to perform. M. Triefnecker 
has given us, at the fame time, a table of 
all the former refults for the pofition of 
the towns in which eclipfes have been ob- 
ferved. : 
Toe third volume of the Memoirs of 
the Inftitute; the eighth of the Memoirs 
of the Italian Society; the Ephemeris of 
Berlin, for 1802 and 1804; thole of Mi- 
lan, for 1801; and Baron Zach’s Journal 
for the whole year, have continued to 
furnith new and iatercting obfervations. 
M. De Zach has procured the obferva- 
tions that Liefganig made‘at Vienna, be- 
tween the years 1755 and 1774, and thofe 
which were taken by Niebuhr in the Le- 
Vant in 1761, and which have never been 
publithed. We have received the Memoirs 
Monten: Mas, No. %5. 
The Hiftory of Aferondny, by C. Lalande, 
o71 
of the Academy of Berlin, for 1796 and 
1797; and the fixth volume of the Me- 
moirs of Turin; but it contains no-aftro- 
nomical fubjeéts. 
The obfervatery at Paris having ob- 
tained new inftruments, has. been put into 
a ftate of activity by Citizens Mechain 
and Bouvard; and the Board of Longitude 
is engaged in devifing means to print the 
Obfervations of 1801, in the fame form 
as thofe at Greenwich. Caroché having 
finifhed a telefcope twenty-two feet long, 
Citizen/Treme! isengaged in the conftruc- 
tion of proper machinery for mounting it, 
‘and by which it may be readily ufed: We 
have reafon to rejoice, on all-occafions, at 
the happinefs of having fer a Minifter a 
perfon fo learned and celebrated, who 
lofes no opportunity of rendering himfelf 
ufeful to the fciences. : 
The telefcope which Jofeph Delifle fixed 
at the Hotel de Cluzy, m the year 1748, 
with which I made my fir obfervations, 
as well as Citizen Meffier, was become 
abfoiutely ufelefs through ruf. The 
Committee of Longitude have ordered it 
to be completely repaired and put in pro-~ 
per order, fo that cur colleague Citizen 
Meffier will have new affiftance in his ufe- 
ful obfervations. . 
Citizen Lenoir has fhewn at Paris in 
the public account for the year 1801, that 
French indu@ry no longer yields to thae 
of the Englifn: he has received from the 
hands of Government one of twelve gold 
medals which have been diftributed to our 
moftdeflerving artifts. 
-Citizen Jecker has eftablifhed a thop 
with forty workmen tor optical and aftro- 
nomical inftruments, aififted by Citizen 
Michel, one of the ableft artifis of Paris. 
The Committee of Longitude has fent a. 
quadrant to Citizen Flaugergues, at Vi- 
vier, and one to Citizen Dangos, at 
Fazbe, toenable them to make corre& 
and accurate obfervations. The former 
has already mace ufe of his for afcertain- 
ing the latitude of his obfervatory, which 
he finds to be 44° 29’ 22”, greater by 
1%" than was determined by means of 
triangles, formerly applied for this pur- 
pole. He has moft affiduoufly attended to 
the eclipfis of Jupiter’s fatcilites—he has 
obferved the fpots on the fun’s furface, of 
which there have been many during the 
year—and he has calculated the places of 
feveral ftars. 
Citizen Chabrol has given us nart of a 
new analytical method tor ecliples, with - 
which he has calculated many: he has 
allo verified the tabies of Mars and Mer- 
sury by the obfervations of this year. He 
Gg has 
; 4+ a 
