Mr. Schroeter/s Observation , &c. 2 6g 
much more accuracy ; for although the sun was at this time fre- 
quently covered by clouds of different densities, yet by means 
of a variety of glasses, which I applied occasionally to the eye- 
glass of my telescope, I was enabled to see distinctly the 
decreasing obscuration, which during the 3 last seconds was 
scarcely perceptible, although certainly still existing, the orb of 
the sun not being perfectly complete till after the expiration 
of the last-mentioned interval, which ended at i h 32' 54" true 
time. All these observations were made with the abovemen- 
tioned 7-feet telescope, made by professor Schrader, magni- 
fying 5° times. 
During the intermediate period of the eclipse, the atmosphere 
being tolerably serene, I was enabled by the excellence of this 
telescope, and a large 13-feet reflector, to make a very interest- 
ing observation, which led to some important inferences. 
Ail telescopes, even the 3-feet achromatic, applied to 
my quadrant, shewed the globular body of the moon like a 
dusky grey orb floating before the sun, its faint light becom- 
ing somewhat brighter towards the rim. 
2. Both myself, and several other persons who were then 
with me, perceived soon after the beginning of the eclipse three 
high ridges of mountains on the south-east border of the moon 
projecting sensibly into the disk of the sun ; one of them ap- 
pearing to be a long and considerable mountainous range, and 
the two others to the westward being more in the shape of 
prominent points. This was seen with the 7-feet reflector 
magnifying only 50 times, but this very distinctly : I applied 
a power of 160, together with the projection machine, and 
found that the two last-mentioned points were from 24 to 28 
seconds asunder ; that the long eastern range was somewhat 
