73 
Satellites of the Georgium Sidus , &c. 
March 7. The 1st was invisible. 
March 17. Both 1st and 2d were invisible. 
March si. The 1st was invisible, though looked for with 
all the powers of the instrument. 
March 22. The 2d was hardly visible. 
March 23. The 2d was not to be seen. 
March 2 6. The 1st was but just visible. 
March 5, 1796. The 2d was invisible. 
April 4, 1796. The 1st was invisible. 
“ March 17, 1797. Power 600. Neither of the satellites are 
“ visible to-night ; with 300 I cannot see them. The night is 
“ very beautiful, and I have a field bar to hide the planet ; but, 
“ notwithstanding this, I cannot see either of the satellites/' 
March 21. The 1st satellite was invisible. 
March 23. The 2d was invisible. The 1st could not be seen 
immediately, but, having been informed where exactly to look 
for it, according to my calculation of its place, it was perceived; 
and with 600 seen very well. 
March 25. Both satellites were invisible. 
Remarks on the foregoing Observations . 
From the observations of Jan. 14, Feb. 10, March 6, 1787, 
and Feb. 13, 1792, it appears, that all very small stars, when 
they come near the planet, lose much of their lustre. Indeed, 
every observation that has been recorded before, of supposed 
satellites that have been proved to be stars afterwards, has fully 
confirmed this circumstance ; for they were always found to be 
considerable stars, and their being mistaken for satellites was 
owing to their loss of light when near the planet. This would 
hardly deserve notice, as it is well known that a superior light 
MDCCXCVIII. L 
