on the notation of the Planets , &c. t 33 
d. m. s. 
Firft biennial period, 1777, April 8 7 30 
1779? J une ^ 10 10 
789 2 40 
The geocentric places of Mars at thofe times were, 
S. D. ' " 
6 6 31 26 
7 l 3 48 30 
1 7 l 7 4 
turned into time at 4", 109 per minute of a degree and fub~ 
trafted, becaufe Mars is more advanced in the ecliptic, is, 
789 2 40 o 
— 2 33 n,8 
Divided by 768 rev. 789 o 6 4.8,2- 
1 revolution = 24 b. 39'' 23A03. 
*'.*(<&* + ' ■*>*,’'* A ■ H, ; - ; ‘ ' ' f 1 
D: H. M. S. 
Second biennial period, 1777, April 17 7 50 o> 
1 779’ J une : 5 9 45 1 7 
7*9 r _55 >7 
S. D. ' " 
Geocentric places 6 3 31 27 
7 J2 40 23. 
1 9 8 56, 
Turned into time 789 1 55 17 
and fubtrafled — - 2 40 52- 
768 revol. 788 23 14 25 
1 revolution = 24 h. 39' 18, "94. 
Third-' 
