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"•oh 1 </ 00)" apparent time, all three agreeing to the 
lame fecond. The final egrefs by Mr. Green and 
myfelf, was only one fecond later than by Mr. Bird, 
at aoh 3 7' 9'' apparent time. At 20 h 2 6' 56", by 
the mean of five obfervations, the center of Venus 
was north of the fun’s fouth limb in declination, by 
my micrometer 3' 20". The diameter of Venifs 
was once meafured by Mr. Green, with Dollond’s 
micrometer, 57"; by Mr. Canton in Spital-Square, 
being the mean of three good obfervations, with the 
fame kind of micrometer, 58". The fun’s hori- 
zontal diameter was obferved by Mr. Bird, with the 
refledtor, 31 ' 36", which I fufpedt is three or four 
feconds too large, as the telefcope was not accurately 
adjufted for parallel rays to his eye. 
The internal contact was obferved by Mr. Hornfby, 
on the north fide of the obfervatory at Shirburn- 
Caftle, with an excellent 12 feet telefcope and mi- 
crometer, made by Mr. Bird, of the old form ; and 
by Mr. Phelps, on the fouth fide, with your Lord- 
fhip’s 14, feet telefcope ; the telefcope ufed by Mr. 
Hornfby magnifying 68 times, and that by Mr. 
Phelps about 55 times ; by Mr. Hornfby at 20 11 1 f' 10" 
apparent time, by Mr. Phelps four feconds later, 
Mr. Bartlet counting the clock, which each obferver 
could hear. Mr. Phelps loft the final contadt, by 
miftaking the teller of the clock. Mr. Hornfby makes 
it at 2 oh 33' \y" • but fuppofes it to have happened 
a few feconds later; for, at 2oh 33' 12 ", it was not 
quite gone off the fun, when he was obliged to move 
his eye-ftand, and 20 " after, it was certainly totally 
emerged. They make the diameter of Venus 56", 
and Mr. Hornfby, by a mean of twelve obfervations, 
made 
