C i8 3 ] 
The diameter of the fun, from four obfervations 
very nearly agreeing with each other, was 31' 33" 24'", 
h. m. f. 
The time, by the clock, of the internal 0 R 
contact, was j J 7 4 
Of the external contad -835-27 
Of noon - - - - 11 58 24! 
Therefore the apparent time of the firft 1 0 0 
contad, was - - - - - - j 8 18 4 « 
Of the laft contad - 837 4 
The two pofitions of Venus on the fun’s difc, [Vide 
Tab. VI.] in chords parallel to the equator, were de- 
termined by frequently meafuring the parts of fuch 
chords on each iide the centre of the planet, with 
the objed-glafs micrometer ; which was done with 
difficulty, both on account of the clouds, and the 
telefcope’s not having an equatorial motion. 
Let the arc A T B reprefent a part of the fun’s 
limb ; let C F D be parallel to it, at the diftance of 
a femidiameter of Venus ; and let O V X and P V Y 
be parallel to the equator. At yh 14m A. M. 
apparent time, OV was 14' 43 ", and VX 5-' 32". 
At 7 h 57 m PV was 16' 36", and VY V 56". 
Thefe obfervations were all made with a receding 
telefcope of 1 8 inches focal length, which magnified 
about 55 times. 
XXXV. Some 
