Mo 
Mr . Schroeter's Observations 
I examined this light with all possible care, and found it of 
the same extent at both points, and fading awa;y at both in the 
same gradual proportion. But I also, with the same caution, 
explored whether I could distinguish any part of the limb of 
the moon farther towards the east ; since if this crepuscular 
light had been the effect of the light reflected from our globe, 
it would undoubtedly have appeared more sensibly at the parts 
most remote from the glare of the illuminated hemisphere. 
But, with the greatest exertion of my visual powers, I could 
not discover any part of the, as yet, wholly darkened hemi- 
sphere, except one single speck, being the summit of the 
mountainous ridge Leibnitz, which was then strongly illu- 
minated by the solar light : and indeed eight minutes elapsed 
before the remainder of the limb became visible ; when not 
only separate parts of it, but the whole displayed itself at 
once. 
This alone gave me certain hopes of an ample recom pence, 
and satisfied me that the principles I had laid down in my 
Selenotop. Fragm. § 525, seqq . concerning the atmospheres of 
the planets, and especially of the moon, are founded on truth. 
But a similar observation made on the 6th, after seven 
o'clock, afforded me several collateral circumstances, which 
strongly corroborate what I have there advanced on this sub- 
ject. The whole limb of the dark hemisphere illuminated 
only by the reflected light of our globe, appeared now so clear 
and distinct, that I could very readily discern not only the 
large, but also the smaller spots, and among these Plato, 
Aristarchus, Menelaus, Manilius, Copernicus, &c. and even the 
small speck to the north-west of Aristarchus, marked b , Tab. 
XXVII. fig. 1. of the Fragments. I could apply the usual 
