made in the Auftrian Netherlands 
647 
For the Longitude of Louvain. 
17.73, Auguft 31, immerfion of V’s firft fatellite. 
At 9h 39' 1" by the clock, felf, good, Moon-light. 
9 38 50 ditto, my fon. 
At Nolon, Cardinal de luynes,. achrom. 60 times, 
AtTyrnaw, f. weiss, — — 
A r Perinaldo, M. maraldi, achrom. as before. 
At Oxford, Mr. hornsby, achrom. 3! feet, clear. 
At Greenwich, 6 feet reflector, — • 
At Louvain, — — - * — 
Apparent times* 
h f ft 
10 4 45 
10 2 7 
11 22 16 
9 47 36 
9 Si 57. 
10 10 39 
On a mean, Louvain Eaft of Paris 9' 31", 2 
Auguft 31, immerfion of ^’s fecond fatellite. 
At 1 2h 30' 49" by the clock, felf, hazy and Moon-light. 
At Perinaldo, M. mAraldi, achrom. doubtful 
At UpfaT, _____ 
At Geneva, M. mallet, achrom. as before, thin fog. 
At Greenwich, lix feet refle&or, <— 
At Louvain, — — * 
13 14 32 
*3 55 20 
13 8 51 
12 45 1 
13 2 3 1 
On a mean, Louvain Eaft of Paris 8' 42". 
