2 6 Profejfor Bugge’s Agronomical Obfervations 
In order to afcertain the annual motion of the node, this 
obfervation is to be compared with the obfervations ot other 
aftronomers. The numbers in the column A are found by 
fetting out from my own obfervations 1786. In the column 
B, the obfervation of M. de la Lande 1769 is taken as the 
fijft ; the feries C is begun with the determination of M. 
Horrox 1639; and in the feries D, M. Cassini’s obfervation 
1698 is taken as the bafis. 
The Aftrono- 
mer. 
The time of 
obfervation. 
Heliocentric 
longitude of 
Q ? • 
Annual motion of & $ . . 
A. 
B. 
C. j 
D. 
Horrox 
Cassini 
Cassini 
Cassini 
de la Caille 
de la Caille 
, de la Lande 
Bugge 
. 
1 639^ Dec. 4 
1698, Sept. 4 
1705, June 1 1 
173L A P ril 7 
1746, Dec. 21 
1761, June 5 
1769, June 3 
1786, Aug. 25 
s * 0 ii > 
2 13 27 50 
2 14 1 45 
2 14 2 52 
2 14 J 7 2 
2 14 23 10 
2 14 3 1 3 ° 
2 14 36 20 
2 14 44 3 8 
Mean 
// 
3 1 >3 
29,2 
3°>9 
3 °’° 
3 2 * 1 
3 1 * 2 
28,1 
// 
3 j »6 
29.2 
3 L 3 
30.2 
34>3 
// 
3 6 »5 
3 L 9 
3 2 >7 
3L0 
3 L 3 
3 j >6 
3 L 3 
// 
24,9 
26,8 
27,3 
29,2 
29,2 
, 3°>4 
3 I »3 
3 2 ’3 
2 7»5 
If the mean be taken of thofe four means, the annual 
motion of Venus's node will be 30 ,37", or very near 31", 
adopted in the tables of Dr. Halley and M. de la Lande. 
11 . The greatefi inclination of the orbit of Venus to the ecliptic. 
In the firft place, I fhall put down the obferved geo- 
centric longitudes and latitudes, corrected for aberration and 
nutation. 
Mean 
