Vot.IV.] 
by Lefrancais, together with a variety of 
ebfervations by Meffier, Duc la Chapelle, 
Bouvard, Vidal, Piéter, Flaugergue, 
Thulis, &c. 
Several eclipfes, calculated by myfelf, 
a dclcription of the entire circle, by Biffy, 
with the print which Genera!’ Calon has 
cauted to be engraved, and a reprefenta- 
ticn of the moon. 
Memoirs, compofed by myfelf, on the 
Obliquity of the Ecliptic, on the Longi- 
tude of Greenwich, and of the Cape of 
Circumcifion ; on the Altitude of Paris, 
above the Level of the Sea; on the. differ- 
“ent altitudes of the Seine, at Paris. 
My Hiftory of Aftronomy for the years 
178y, 17913 my Tables for afcertainn g 
the Paffage of the Stars at Noon, and the 
Tables of Borda, for reducing the Alti- 
tudes of the Polar Stars. 
The Elements of the Comet of 1795, 
by Meffis. Zach, Bouvard, and Profperin. 
The Memoirs of the Academy, for 
1759, which have been long in print, but 
frit publithed this year, contain a long and 
excellent treatife, by Laplace, on the Satel- 
lites of Jupiter; Memoirs, compofed by 
myfelf, on the Motion of Venus, on the 
Ebbs and Floods of the Equinoxes, and on 
a variety of obfervations which I have 
caleulaced. The reader will find, like- 
wife, the commencement of the Obferva- 
tions of the 8000 Boreal Stars, which I 
made at the Military School; together 
with the obfervations of Agelet, prior to 
his departure for circumnavigaring the 
globe, which has deprived us of the affit-. 
ance of this young dnd judicivus aftro- 
nomer. 
Memoirs, by Meffier, on the Two 
Comets of 1788; a Memoir, by Legen- 
dre, on the Figure of the Plancts; Me- 
moirs, by Laplace, on the Changes of the 
Preceffion, on the Obdliquity of the Equi- 
nox, on the Degrees of the Earth, and on 
the length of Pendulums, from which 
this curious and intereftiny difcovery re- 
fults, that the inclination of the true eclip- 
tic on the aflumed ecliptic of 1700. the 
limits of which. will be five degrecs, 
twenty-five minutes, according to La- 
grange (Mem. de l’Acad, 1774, Mem. de 
Berlin, 1782) reduces itfeif to one degree 
twenty-one minutes, becaufe the ation of 
the fun and moon on the terreftrial fphe- 
roid, reduces, by one quarter, the extent 
of the variations of the obliquity which 
would take place if the earth were a 
true fphere. 
The “memoirs for 1790, which are 
Montury Mac. XXVI. 
Lalands Hiftory of Afronomy. 
-géted various errors. 
543 
already printed, and will fhortly be pub- 
lifhed, contain the fequel of the joint ob- 
fervations of myfelf and my affuciate, of 
_ the ftars, together with the obfervations 
made by Ageler, preyious to his depar- 
ture; along Treatife, by Laplace, on the 
Flux and Reflux of the Sea; three Me- 
moirs, by Meffier, on the Comets of 
17993; Memoirs, by Meffier and myfelf, 
on the Difappearance of Saturn’s Ring; 
the Paffage of Mercury over the Sun, in 
1789, by Meffier, together with the 
Methdd of finding the trae Anomaly, by 
Dufejour. 
In the Connviffance des Tems, for 
1797, 1 am now printing 2000 ftars, of 
the fixth magnitude, which have never 
been obferved nor calculated by any 
perfon before. 
De Laplace has publifhed his Expofi- 
tion of the Syftem of the Earth, which 
contains many new difcoveries, and new 
ideas, on feveral objeéts of Natural Hif- 
tory and Aftronomy. 
A third edition of Flamfteed’s Atlas, in 
quarto, has recently been publithed b 
La Marche. I have added a confiderable 
number of ftars to the catalogue, and cor- 
Mechain has like- 
wife greatly contributed towards the per- 
feétion of this edition. 
The Poem on the Sphere, by Ricard, 
is an objeét of confequence tothe feience 
of aftronomy, as it may afhitt its propaga- 
tion. In this pacm, the accuracy of the 
hatnematictan is happily blended with 
the luxuriane charms of verfe. It was 
fubmitted to my infpettion in manufcript, 
but I found little room for remark or 
alteration. 
M:. Dalby has publithed, in London, 
a memoir, confifting of twenty pages, 
which contains a narrative of the meafure 
of a degree of longitude, and a degree of 
latitude, executed in the Indies, io the 
north of Calcutta, in 1791 and 1792, by 
M. Reuben Burrow. The degree of lon= 
gitude under the tropic, is 41,620 toiles, 
and the degree of latitude between 23 
deg. 44 min. and 23 deg. 48 min. : that is’ 
to fay, towards the tropic of cancer, 
£6,726 toiles, which is lefs, by 27 toifes 
than that of Peru. ) 
The death of Mr. Burrow in May, 
1792, has deprived us of the refult of his 
labours, which it was his intention to 
have profecuted as foon as he fhould ré- 
cetve the grand feétor, which he has been 
foliciting ever fince 17%9. ; - 
A watch, by Arnold, with which he 
4B went 
