C 3°3 ] 
the ingrefs, becaufe it appears clear to me that there 
muft have been a miftake in the obfervation of the in- 
ternal contadl at the ingrefs at Stokolm, owing, as I 
mentioned in my former paper, to the fmall altitude 
of the Sun at the time of the ingrefs : for by com- 
paring the times of ingrefs and egrefs obferved at 
Stokolm and Upfal, we find that the difference of 
longitude between thefe two places is i' 39", and 
T 59^, and as we are fure that the obfervation at the 
egrefs, gives the difference of longitude the moff cer- 
tain in this cafe, therefore it follows that the error was 
at the ingrefs, and it is eafy to prove that the error is 
in the obfervation at Stokolm. 
To avoid all uncertainty, and to be as clear and 
diftindt as poffible, I fhall fet down, in the following 
table, the obfervation at the egrefs at each place com- 
pared, the difference of longitude between each place 
compared, the effedt of the parallaxes refulting from 
the comparifon, and alfo the effect of the parallaxes 
computed on a fuppofition that the Sun’s parallax is 
= 8" 5, in order, that if there is any miffake, it may, 
the more eafily, be difeovered. 
I compare Cajaneburg with 18 places, Bologna 
with 17 places, and Tobolfk with 18 places, and they 
are as follow. 
h r ff 
in 
10 7 59 Cajan. 2 59 C. 
o 38 29 = D. M. 2 18 S. 
h 
/ U / // 
10 7 59 Cajan. 2 59 C. 
o 40 28 D. M. 2 21 U. 
9 29 30 4T 
9 30 11 Stokolm. 
9 2 7 3 r 3 s 
928 9 Upfal. 
// 
Par, := 8. 50 
R r 2 
Par. =: 8. 50 
10 7 
41 
38 
