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XLVI. Ohfervations of the T*ranft of Venus 
(wer the Sun, June 3, 1769. In a 
Letter to the Reverend Nevil Mafkelyne, 
F, R, S, Afronomer Royal ^ from John 
Winthrop, Efquire^ F. R. R, Hollifian 
Profejfor of Mathematics at Cambridge, 
in New England. 
Cambridge, New-England, Sept. 5, 1769. 
Reverend Sir, 
Read Dec. 7, T B E G leave to lay before youmyob- 
^7^9* fervation of the late tranfit of Venus, 
the beginning of which I obferved, in this place, with 
all the care I was capable of. Our fituation on this 
North American coaft, I am fenfible, was not the 
moft favourable, as we could fee only the firft part 
of the tranfit ; yet, I prefume, careful ohfervations, 
wherever made, will have their ufe in determining 
the grand problem of the Sun’s parallax ; at leaf!:,, 
may ferve as collateral evidences to the capital obfer- 
vations. 
Our apparatus having been wholly deftroyed by 
fire, about five years ago, we have fince procured a 
new fet of aftronomical infiruments, made by fome 
of the mofi eminent hands in London. A clock, by 
Mr. 
