[ 427 ] 
fubjed^:,- which I fhall always have the mofl grateful 
fenfe of j and am, with real efteem, 
S I R, Your much obliged, 
and moft obedient, humble 'fervant. 
Foydl Mathematical School, 
in Chrift’s Hofpital, 
Dec. zi, 1769. 
Danid Harris, 
. ] 
Times of the conta£ls of Venus with the Sun, as dbferved from 
the Round Tower, in Windfor Caftle, by perniiffion of his 
Grace the Duke of Montagu, June 3, 1769. 
Latitude ci° 28'! N. and longitude 2' 24",! >n tiipe, W. from 
the Royal Obfervatory at Greenwich. 
By the clock. Mean time. 
h / // h f ff 
The external conta£f of Venus 1 y 4 7 06 14 p. m. 
with the Sun, ■ i j 
The internal contad at ■ 7. 22 38 ,, 7 24^22 
Duration between the contaas, the clock being! ^g 
i' 44" too flow for mean time, j 
» Venus’s diameter meafured 3 different times o 59I 
Chords meafured parallel to the equator. 
Venus’s weftern limb from the Suns eafternl 425 
limb, at 7'' 46' 04^^ mean time ^ J 
Venus’s eaftern limb from the Suns weftern I ^ 
limb, at 7'' 47' 04" mean time . ^ ^ 
Neareft diftance of Venus’s lower limb from 1 2 49 
the Sun’s limb, at 8*' o' 1 5", the laft of her J 
The Sun’s horizontal diameter (at f 30 ) 3 ^ 4 * 
Note, Thefe obfervations were made with a good regulator^ 
made by Binning, of Windfor; an 18 inch refleaor, made 
by the late ingenious Mr. Short, and a double object glals micro- 
meter, made by Dollond. 
* The very fame that.I made it at the tranflt, 1761. 
I i i 2 ^ t 
