and Velocity of the Solar Motion. 237 
ture has been alluded to in the same Paper.* The insulation 
ascribed to the sun relates merely to a supposed binary com- 
bination with some neighbouring star ; and it has now been 
proved by an example of Arcturus, that the solar motion 
cannot be occasioned or accounted for by a periodical revo- 
lution of the sun and this or any other star about their 
common centre of gravity. 
* Phil. Trans, for 1802, page 479. 
ERRATA 
In Table VJI. of the first part of this Paper, star Aldebaran, the two last columns, 
for 13 0 18' 58", read I3°4i'48". 
for 0,02842, read 0,02922. 
Printed by W. Bulraer and Co. 
Cleveland-Row, St. James’s. 
