[ 2 7 8 ] 
As to the equation of the time of noon, depend- 
ing on the change of the Sun’s declination, I did not 
make it in that pamphlet. I had all along intended 
to calculate it when I fhoula fettle the refult of the 
obfervation, though I knew it mud be very fmall, as 
the Sun did not alter his declination, then, above 
i in 4 hours. But when I came to obferve the con- 
tacts, and found that I could not be fure of them 
within 2" or 4 > whereas Dr. Halley’s papers led me 
to expeCt that I might obferve them to a tingle fe- 
cond, I thought it hardly worth while to calculate 
this equation, as the precife moments of the contacts 
could not be fixed by it. — But I have fince done it, 
and find it to be 4"' to be fubftraCted from the middle 
time. An account of the obfervation, thus corrected, 
I fent lad fummer to Profeflor Blils at Greenwich, 
concluding, from his dation, that the obfervations 
from different parts of the world would be collected 
and compared by him. But having fince underftood 
that that affair is in your hands, though I have not 
yet had the pleafure of feeing your paper upon it, 
and having had no return from Mr. Bids, I afk leave 
to tranfmit a copy of it to you ; and if \ou will be 
pleafed to give it a place in your TranfaCtions with a 
remark at the end (if you think it proper) flowing 
what the Suns parallax comes out from the obferva- 
tion as it now dands (which I fuppofe will not differ 
much from the other determinations) I fhall take it 
as a favour. This will do honour to the govern- 
ment who employed me. Perhaps, too, poderity may 
be glad to fee, and may make ule of, the only ob- 
fervation of this rare phenomenon that was made in 
America. I am, &c. 
John Winthrop. 
L. Obfcr- 
