on the Planet Venus. 
211 
April 2 9, 1 793. Correction of the clock, — 3' 13", 4. 
io h 30'. 7-feet reflector ; power 215. No spot. Both horns 
perfectly alike. Not the least appearance of any mountains. 
With 287 and 430. Both horns equally sharp : no moun- 
tains visible. 
May 1, 1793. Correction of the clock, — 3' 15", 5. 
io h 45'. With the 10-feet reflector ; power 300. No spot. 
Both horns perfectly alike, and very sharp. Not the least ap- 
pearance of any mountains. 
With 600, very distinct. Both horns extremely sharp, and 
alike, b o mountains. 
With 400, the same appearances. 
May 5, 1793. Correction of the clock, — 3' 19", 8. 
n h 27'. 7-feet reflector; power 215, 287, and 430. Both 
horns perfectly alike. No spot. Not the least appearance of 
any mountains. 
May 12, 1793. Correction of the clock, — 3' 27",%. 
n h io'. 7-feet reflector ; power 215. Beautifully distinct. 
No spot visible ; indeed the crescent is so slender, that we 
cannot expect to see any spots upon the disk. 
Not the least appearance of any mountains, or inequality 
on the border. 
The slender part of the crescent appears often knotty, but 
this is evidently a deception arising from undulations in the 
air ; for, with proper attention, the knots may be perceived to 
change place. Little scratches in the great, or small specu- 
lum, may also occasion seeming irregularities ; but, with pro- 
per attention, all such deceptions may be easily detected. Both 
horns perfectly alike. 
