114 
SECOND REPORT - 1832 . 
siderable number of telescopic stars, and bis catalogue of 17,000 
stars from all authors ; it was followed in 1805 by his smaller 
catalogue. In 1803, Cagnoli’s catalogue of 500 stars appeared 
in the Memorie della Societa Italiana (published separately 
in 1807, with tables for computing the aberration and nutation); 
and in the same year Piazzi’s catalogue of 6748 stars, founded 
on Maskelyne's catalogue of 1790, was published in the Palermo 
Observations. The last-mentioned catalogue, revised from the 
author’s fundamental places, and (in his opinion) improved, and 
extended to 7646 stars, was published as a separate work in 
1814. This may well be considered as the greatest work un¬ 
dertaken by any modern astronomer; as not only was every 
star so frequently observed as to determine its place well, both 
in right ascension and declination, but every observation was 
reduced, and the results and their comparison with those of 
former astronomers exhibited in a clear form. It is still the 
standard accurate catalogue, as the places deduced from the 
Histoire Celeste are still the standard approximate catalogue 
for small stars. In 1806 Zach’s Tabulce Speciales was pub¬ 
lished. The object of this work, besides giving a catalogue of 
1830 zodiacal stars principally from Zach’s observations, was 
to supply facilities for applying the astronomical corrections of 
aberration and nutation to 494 of the principal stars. And in 
1812 the same astronomer published the Tables nouvelles 
d'Aberration §c. for 1404 stars. In the Greenwich Observa¬ 
tions for 1816, Mr. Pond published a catalogue of 400 stars. In 
1818 (as I have mentioned,) Bessel published the Fundament a 
Astronomice , exhibiting the results of all Bradley’s observations 
of stars in a catalogue of 3222 stars ; these were compared with 
Piazzi’s, but no means of applying aberration and nutation were 
given. In 1822, Harding’s Atlas Coelistis was published,’com¬ 
prising a series of charts including every star on the observa¬ 
tion of which any dependence could be placed, as far as the 
30th degree of south declination. 
The principal defect in Piazzi’s selection, is the want of stars 
near the pole; to supply this, Struve at Dorpat observed (in 
right ascension only) many circumpolar and other stars ; he also 
fixed the places of many minute stars in the neighbourhood of 
large ones : these observations are contained in the Dorpat 
Observations. Schwerd also (at Speyer) has observed many 
circumpolar stars both in right ascension and declination, and 
has published a chart of this part of the heavens. 
Besides these, the following less complete catalogues have 
been published. Right Ascensions, by Littrow, in the Vienna 
Observations , and by the writer of this paper in the Cambridge 
