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XXV. Remarks on the Parallax of a Lyrce. By J. Brinkley, 
D. D. F. R. S. &c. Andrew’s Professor of Astronomy in the 
University of Dublin. 
Read March 11, 1824. 
The Paper of the Astronomer Royal on the parallax of » 
Lyrae, in the first part of the Transactions for 1823, from 
the manner in which the subject is there treated, appears to 
me likely to mislead as to the actual state of the question 
relative to the existence, or non-existence, of visible parallax 
in a Lyrae. 
I have exerted myself to the utmost of my power in ex- 
amining this question by observations and deductions there- 
from. In stating these observations and deductions, I am 
not conscious of having in any manner related them, so that 
they may have greater weight than they are entitled to, and 
I am certain that Mr. Pond conceives he has done the same. 
But we are apt on occasions of this kind to deceive ourselves. 
I am desirous of seeing my own endeavours more exactly 
represented, and I wish the Greenwich observations should 
be considered as opposing mine to the extent only, that they 
actually do oppose them, and no further. 
In the view which Mr. Pond has taken of the question, 
some important circumstances of my observations are so 
imperfectly related, that I am apprehensive the Greenwich 
results will appear to possess a weight beyond what a close 
examination will show belongs to them. 
