294 
Dr. Brinkley on the 
a Lyras. 
The following are the results of my observations of a Lyras. 
My former observations are here reduced to what they 
would be by the French refractions, and the other observa- 
tions have been reduced, taking the maximum of aberration 
= 20"^. Both circumstances tend to diminish in a small 
degree the parallax ; but the result from all my observations 
gives the double parallax above a second less than I should 
have expected from my former observations. Whether the 
discordance 1 had found was to be attributed to parallax, or 
any other cause, I had expected the new results would not 
materially differ from my former conclusions. Although it 
has happened otherwise, yet an examination of the different 
results will, I conceive, be found not to contradict my former 
remarks respecting the accuracy to be attained by my 
instrument. 
Summer Zenith dist. Jan. 1, 1811. 
0 
! £ 
0 / // 
1808-1813 
65 
14 4 6 19.S5+ >78 p 
1814 
20 
19. 8 7+ 78 P 
1815 
20 
19 86 + ,74 p 
1816 
11 
20,46 + ,7 7 P 
1817 
12 
128 
19,62 + ,62 p 
