■ . [^ 88 ] 
remained obfcure (from what caufe I do not at pre- 
fent enquire) for feveral feconds after the limbs of the 
Planet and the Sun were feparated. I think this 
worthy of remark, becaufe I hear that the appearance 
of the ligament, which 1 have defcribed, has been im- 
puted by fome to an inaccurate adjuflment of the 
glalTes to the obferver’s eye. 
S. Horfley. 
/ 
In the foregoing Paper, I have given feveral compa- 
rifons of my clock 'with IVIr. Hornfby’s. Its differ- 
ence from Mr. Hornfby’s, by a mean of all the com- 
parifons, will be found 2 5''4-, at the time of obferva- 
tion. But I rely chiefly on the comparifons of Satur- 
day night and Sunday morning, which make the 
difference 26'', 
XXV. Objer- 
