C 6 3S ] 
LVI. An Extra & of a Letter from Abbe De 
la Caille, F. R. S . and Member of the 
Royal Academy of Sciences at Paris, to 
Matthew Maty, M. D. and F. R. S. 
Paris, Feb. 18, 1760. 
’LL venture to fend you fome of my 
obfervations on the prefent comet, 
becaufe bad weather may have prevented it from 
being feen in England. 
Read March 6, 
1760. 
I 
Feb. 8. 
Equal time. 
h / // 
Longitude. 
0 / // 
North latitude. 
0 1 // 
3 26 4 2 
9 29 28 
SI 20 17 22 
9 - 
8 48 50 
l8 49 l8 
4 46 28 
1 1. 
7 22 35 
16 5 3 
7 'i 4 fo 
*’£ 
7 47 4 
14 43 21 
8 24 18 
1 4 * 
641 0 
12 20 l8 
O 
O 
VO 
Thefe obfervations, together with another made 
at Marfeilles, (on the firfb day) at 9 11 55' 38" equal 
time, when the longitude of the comet was found in 
Si 23 0 29' 46'', and its north latitude 31' 20", have 
enabled me to compute the elements of its orbit. 
Its motion is direct. The afcending node is in 
1 p° 4,2' o", and the place of the perihelion in 
26° 41' 22". The inclination of the orbit is 
8o° y i' 30", and the didance of the perihelion JUgJJL 
of the radius of the orbit of the earth. The comet 
paded the perihelion Nov. 25, 1759, at 2 ° h 55* 
mean time, at Paris. Thefe computations will be 
further improved by the obfervations I dill hope to 
make; but they are diffident to find the comet’s 
place in the heavens. 
V 0 l. LI, 4 N 
LVII. Ex- 
