81 
Greenwich 
Mean Time. 
March 30 -369639 =: 1" 22™ 27534 + 19° 37143 
April 7 -324534 3 7 57-46 13 17 39 
Bolo 371142 4 13 16-36 544 2-4 
1854. Appar. a. Appar. 0. 
The corrections for aberration and parallax were obtained by 
the aid of my first set of elements, which, as it happens, ap- 
pear to be unexpectedly near the truth. ‘To save you the 
trouble of reference, I here place the two sets side by side. 
First Approx. 
Greenwich M. T. Second Approx. 
T March 24-01183 March 24:01376 
T OVAP Se Ot 213° 50’ 89 
fo) 315 34 50 315 28 16°1 
z 82 42 26 82 30 17 °4 
log q. 9°44192 9°442544 
Retrograde. Retrograde. 
‘¢ The second set of elements are referred to the mean 
equinox of April 0:0. The most remarkable circumstance 
connected with them is, that the observations are precisely re- 
presented by them: the correction of the calculated middle 
place, to reduce it to the observed, is 
+ 0"-1 in longitude, and + 0:3 latitude. 
I do not recollect that in all my calculations I have ever 
known a parabolic orbit to agree so closely with the observa- 
tions on which it was founded. 
«You probably recollect that the first set of elements are 
founded on the Markree observations of March 30, April 1, 
and April 3. 
«Tf you think these results worth laying before the Royal 
Trish Academy, at their next meeting, may I trouble you to 
do it? I can easily make the communication somewhat 
longer if you judge it necessary, by entering more into the 
details: but, perhaps, the whole affair may be too trifling to 
occupy 2 moment’s attention. Is not the perfect coincidence 
