HISTORY OF MAURITIUS. 
389 
" 1754—January 1. 
Immersion of the first satellite, observed in the Isle of France 
Adding for three revolutions - - 
h / II 
12 7 48 
5; 7 2 3 *3 
The immersion should happen at the Isle of France, 6th of January 19 31 1 
It was observed at Funchal, by M. Bory - - 6 14 33 19 
Difference of Funchal and the Isle of France - 4 57 42 
Difference of the Isle of France and Paris - - - 3 40 35 
Difference of Funchal and Paris - - - - 1177 
Immersion of the third satellite, observed at the Isle of France in Jan. i; 12 32 46 
Added for one revolution of that satellite - - 7 3 55 12 
The immersion should happen at the Isle of France, 8th of January 16 27 58 
It was observed at Funchal 8th of January - - - 11 30 o 
Difference of the Isle of France and Funchal - - 4 57 58 
Difference of Paris and the Isle of France - - - 3 40 35 
Difference of Funchal and Paris - - - - 1 17 23 
“ The mean difference between these three determinations of longitude at Funchal 
and Paris, is i h 17' 14", or 19 0 i8'|-. If, therefore, the first meridian which passes 
over the Island of Ferro be just 20° from Paris, as is generally conjectured, the town 
of Funchal should not be more distant from this first meridian towards the east than 
o°4i'f-” 
The continuation of these observations may be seen p. 558, and the following 
pages, in the Memoirs of the French Academy, 1754. 
