LAST MISSION TO AFRICA: 
107 
Observed the following emersion of Jupiter's satellites. 
H. M. S. 
Third satellite emerged by Watch m. s. 
Watch too slow 1 55 
First satellite emerged by Watch 
Watch too slow 2 34 
July 20th. — Altitudes taken for the time. 
9 25 18 
9 36 10 
H. M. S. 
H. M. S. 
0 / 
7 
6 45 
21 21 
7 9 42 
22 42 
0 
7 25 
21 40 
0 10 26 
23 2 
0 
8 8 
21 55 
0 11 3 
23 18 
7 
13 10 
24 18 
7 16 27 
25 49 
0 
13 44 
24 33 
0 17 0 
26 3 
0 
14 14 
24 46 
0 17 30 
26 16 
Obser. Mer. Alt. 
166 
/ // 
4 0 
Longitude 
Latitude 
83 2 0 
0 16 0 
83 18 0 
6 42 0 
20 43 0 
5 0 13W. 
14 1 ON. 
The passage of the river being the great desideratum, I 
