5 1 6 Mr. iierschel’s AJlronomical Qbfervations 
obfervation, by the Nautical Almanac, was 1 6' A', 6 ; 
therefore, 45,98 miles = on. 
so/// 
Sun’s longitude at 7I1. . . 927390 
I 
Moon’s longitude at 7 . . 2 2 46 5 2 
Their neareft diftance, . . 45752 
or about 1 2 5 0 8 7 ; the fine of which is .8104: thence 
we find lm 56,73 miles; and the perpendicular height 
, 
of the mohntain is im. 47, or lefs than a mile and 
a half. 
January 22, 8h. 20'. the higheft mountain, fituated 
near Snell or Petavius, projected ix // ,437, which is 
1 2', 34; and lm comes out to be 35,3 mile : threfore the 
perpendicular height is ,57 mile. 
Another, juft behind Mare Crifium, meafured only 7", 
therefore is lefs than half a mile high. 
January 25, 7I1. 30'. in the morning, a mountain 
near Ariftoteles meafured 18", 59 which gives 20,6 
miles; and lm is found 28,53 miles; the perpendicular 
height is therefore only ,37 mile. 
Other mountains about Mare Necftaris meafured about 
2 3", 5 ; but they had hills before them, and their fitua- 
tion was not fo proper for my purpofe. However, it is 
evident they were of no confiderable height. 
1 
January 
