[ 4o8 ] 
of 8 days obfervatlons of equal altitudes, taken in 
June and the beginning of July, the clock appeared 
5^',2 flower than was found by the tranfit-telefcope, 
which was not perfectly adjufled ; though, as its error 
continued always the lame, it was very fufficient for 
determining the rate of the "going of the clock. 
Hence, on the day of the tranfit, the clock was 6^',/ 
or too flow for mean time ; and the obfervations 
that follow are corredted accordingly. 
In watching for the firfl: contadl of Venus, I kept 
my eye on the Sun’s edge where the contadt was ex- 
pedted; keeping that point nearly in the center of 
my field; and the firfl: imprefflon which I faw 
(without any penumbra or atmofphere that I could 
perceive) was at 7^ 12' 32" by my clock, or 
7*^ 12' 39'' mean folar time. I looked particularly to 
fee whether the refl: of the Planet were vifible while 
only part was on. If I faw that, it appeared as a 
portion of a larger circle : but I think 1 fhould not 
have obferved it at all, if I had not looked for it. 
The dark part on the Sun did not appear to me with, 
a fmooth edge ; and yet I could not difeern any un- 
dulation in it : but the clouds obliged me to Aide my 
fmoaked glaffes fo often, it interrupted me much. 
I then tried my flrongefl: magnifying power of no,, 
but to no purpofe ; for there was an undulation on 
the Sun’s edge, by that time, fo great, that I thought 
it befl: to return to the former power of 55. Before 
the internal contadl, at about 7^ 24',. I lofl the Sun 
entirely, and, though there were a few breaks in the 
clouds, he never appeared more that evening. 
As to the eclipfe the next morning, I faw that 
more perfectly ; though at firfl: there were many 
flying 
