0..A. Young—Observations of the Transit of Venus. 82 
OBSERVATIONS OF Fourta CONTACT. 
Observer. bd ng 3 ton Observer’s Remarks. 
2. C. A. Y. |3 00™ 13%-5|Notch disappeared promptly. No traces lingering on 
limb. 
G. RB. 
3.0.G.R. |3 00 02 |Last moment when notch was certainly seen. 
40.1 YY. |3 00 14 net gr tavolng 8 of notch. 
5. C.F. B. (3 00 08 pins bro 
contact 
00 22 parece sein of Cauenbiadh of limb at point of 
ee ptu 
00 00 |Last trace of notch. 
6. M. MeN. |3 
|. W.L, Jr.|3 00 00 |Last trace of notch. 
kM. 3 00 06 (Lost sight of planet. 
‘a 259 50 |Last seen of Venus at TC RATR eT eat ns POM Ee aE 
0H. LB. 13 00 29 |Unsteady. Venus disappearing and reappearing. 
At South| Hadley. 
2h 58m 30° |Very unsteady. Time probably much too early. 
a t Princeton, at the time of this last contac et, there was comparatively little 
caf but the air was very unsteady and the sun’s limb was serrated. Nothing 
Was seen of the planet's atmosphere between thi = cts except 
that for a few Ww moments, about 2 45™, W. saw fine — of light 
‘unning out a little way from the sun’s limb on pei ps of the planet’s disc. 
VI. Micrometrric MmasuRgss. 
eye ring the Transit I made two sets of measures of the 
e's diameter; one with a double-image micrometer, the hee 
With a filar micrometer. The screw-values of the two instru- 
ments were obtained a fon. days after the Transit (when the 
temperature was about same as on y means 
— 
eoableiags measures ‘consisted of 4 sets, each of 10 
he 
readings, Th ey 
0° and 180°), 62'"33 
For the 
north and — diameter a ang. 99° and 270°), 61°89 
east and wes 
Maen, to unity distance, 16’°43. 
: 
