[ 2 & 7 ] 
The three fummits of N°. r, 2, and 3, were very 
diftindh, and especially the hollows between them, fur- 
prizingon account of their depth, for they made cavities 
within the circle of the difc. I am no longer ado- 
niShed at the luminous points, which are feen darting 
from the crefcent ; but I wonder that no notice Should 
hitherto have been taken of thefe mountains feen Side- 
ways in the eclipfes of the fun: a four feet telefcope 
well fixed is necefiury to obferve them didinCtly. 
Large refracting telefcopes cannot ferve for that 
purpofe, as it is difficult to prevent intirely their 
Shaking. Happily we had none of them ; the air was 
clear, the wind to the north, and 1 often made the eclipfe 
move from the top to the bottom of the field of the 
telefcope, in order to fee whether any foots in the ghfs 
did occafion this phenomenon. But the indentings 
were dill the fame, and equally well defined ; and 
when their place was- known, they were likewife feen 
through the other telefcopes. It is only by fight that 
I have marked the place and distances of thefe moun- 
tains, as the great telefcope had no wires ; but, to 
remedy this inconveniency, I exactly obferved the 
inllant of the egrefs of the four chief eminences, 
whence their poiition might be afeertained ; it may 
be, this fide of the moon is one of the lealt mountai- 
nous parts. 
In delineating the mountain, N°. 4, whofe figure 
was io exactly defined, I thought of the atmoSphere j 
but no trace of that is feen in that cate. This, how- 
ever, in my opinion, does not afford a Sufficient reaion 
for den.ingit, becauie the atmo!jphere,in that poiition, 
M m 2 mud 
