C 163 ] 
As to the inftant of the exterior contadf, I fend 
only two obfervations made by me with certainty, 
becaufe of the intervening clouds : the firft /hews the 
time wherein I diftindtly faw through the clouds the 
certain emerfion of Venus, part of the diameter 
of Venus, as nearly as I could judge, excavating the 
limb of the Sun ; the other wherein, from the un- 
lucky clouds, I could no more obferve the leaft vef- 
tige either of the emerfion, or exterior contatft, or of 
Venus. 
True time. 
h 
/ // 
The firft outer contact — — 2194 
The other time of the certain emerfion — 24 17 27 
The time which I ufe, and to which I am ftill at- 
tentive, was obtained by a great number of corre- 
fponding altitudes of the Sun, both before and 
after the day of the tranfit. But in order to the ren- 
dering my calculation perfect one thing is to be de- 
fired, that the longitude and latitude of the obfer- 
vatory at Schwezinga might be precifely determined, 
if poftible, in the fpace of a few months. 
The Serene Elector, although he was not well the 
day before, yet from his great love for aftronomy 
was not only prefent himfelf, which other kings and 
princes ufually are ; but being of an excellent and 
ready genius, he inftituted feveral obfervations with 
the aftronomical quadrant two hours before the 
egrefs, having marked the appulfes of the four limbs 
of the Sun and Venus at each immovable wire, in 
Y 2 order 
