thod of Sage the Longitude. 
at 1h. 37m. 28s. east, the Paris 
fenton at those places will be 
ie 1822. Manheim. Dorpat. ee 
March 3. c= hte te hye 
ay 3" 26" ie eee 
The true declination and Rape of the moon at 
the same times were as below 
t Manheim. At Dorpat. 
March 3. ie 44", 4 e=15' 44", 8 
= 23° 51’ 42” Oan24* 2S 18" 
i g 
Consequently the value of ;'; ( ied ae ) willbe 0°,123 
Hence t—t=3" 0°, 80=180*, 80—0*, 123= 180, 677=the 
true difference of the right ascension of the moon’s centre 
for the two moments of observation. 
The true right ascension of the moon for the times of 
her culmination at the two observatories, (reduced to the 
meridian of Paris,) must be computed by means of second 
differences from the Con. des Tems, and we shall have the 
values ofa and 6. | Their difference will show the increase 
in the true right ascension of the moon, or her true mo- 
tion in the interval denoted by c—h. The results are as 
follows : 
March 3. c=8* 26" a=116° 49’ 24”, 4==moon’s A. R. 
h=7 10 b=116 4 7, 6 
(c—h)=1 16 a~-b= 45 16, 8=moon’s — in- 
crease in A. R,. 
e—h 
aah 167845 
The length of the true solar day, or gg value of ¢, March 
1822, was 24" 3" 43°, 4= 86623° 
ence the value of x, or the true isience of the meri- 
dians of Manheim and Dorpat, will be 
86623,4 
5760 
 e=180, 677 ( X 1,67845—1 jer 12” 59°, 46 
