[ 492 ] 
The mean of the whole, rejecting the companion 
of the Cape, is fuppofing the internal con- 
tact to have happened at o h .36'.49 /r . But if a mis- 
take of one minute was really committed, the 3d 
column will receive a confiderable alteration and the 
parallax refulting from each oblervation will be re- 
prefented in the laft column, the mean of which is 
654, agreeing as nearly as poffible with the paral- 
lax relulting from all the beft obfervations compared 
with the Cape. 
Mr. Pingre finding the parallax refulting from his 
own obfervation to differ fo widely from that deduced 
from the Cape, and that both obfervations might be 
made to agree by fuppofing an error of one minute 
in the obfervation at Rodrigues, has examined every 
fource of error that might be committed ; and upon 
the whole fees reafon to prefer his own obfervation to 
that of Mr. Mafon , not becaufe he could find no mijlake 
in his own , but becaufe he has proved that no miftake 
could poffibly be committed. His obfervation indeed is 
in fome meafure confirmed by comparing all the ob- 
servations with that at Lifbon : from which compa- 
rifon if the longitude above laid down may be de- 
pended upon, the Sun’s parallax is fomewhat more 
than 10 feconds. 
The feveral obfervations, that have been compared 
with the obfervations both of the Cape and Rodri- 
gues, may alfo be compared together; and by com- 
bining fome of them, we may obtain different re- 
fults, upon which we may more or lefs depend, as 
the differences between the obferved times are greater 
or lefs. 
Places 
