north polar distances oj the principal fixed stars. 79 
thing in my results, as well as in those of other astronomers ; 
whereas, without it, every thing is consistent ; and I cannot 
but feel considerable satisfaction in the conviction, that, si- 
dereal astronomy is a more certain science than it is repre- 
sented to be in the last communication of Mr. Pond to the 
Royal Society. 
Observatory, Trinity College, Dublin, 
Dec. 6 , 1823. 
