78 Appendix. 
For constellations farther South the tte pean is of course not so fair,on | 
account of their superior altitude here, still you may form some idea of us 
work in hand when [ tell you that in Orion we have twice the number of stars — 
given by Argelander, and that in Canis Major, the whole of which is visible 
at Bonn, though to be sure its Southern boundary has only an altitude of a 
little more than 6}°, we have 200 stars, while age Sei saw b ; 
A good deal more than half the work is now “done; pe erhaps 4 two-thirds of 
the hemisphere have been Basie 8 well serainized, and the work of re ucing 
the ee places to the mean equinox adopted is very well advanced. The 
total number of stars reocded thus fie is shoe 4100, exclusive of those ob-_ 
Serie 3 in wine type-belt. 
ays of our instruments and of the See ike building, though ia 
thelsieetves am have thus been compensated by the opportunity of pre-_ 
paring the Uranometry which ought to be essentially completed e first 
of Octebens unless this should in its turn be too much delayed by the new ‘i : 
undertaken, in conformity with my original plan. An cece 
feature of is present scheme for the Uranometry consists in carefu ] m 
i 
itude, and for he 
course, the greater part of a year must elapse after the photometer shall have 
been ang in order by repairing the smal] damages which it has suffered on the 
voyag 
Dar: ‘observations have greatly impressed me with the ree and 
excellence with which Lacaille mente ed his work at the f Good 
Hope with the poor means at his disposal nearly a century and a ae ago. 
This devoted astronomer, having onty a telescope half an inch in aperture and | 
mi 
regi 
South of the i opic of Capric Like those of sundry other astronomers, — 
most of his observations remained unreduced for the = part of a century; 
but the Ssighactis computed fr — observations e expense ofsthe 
ritish Association = the adennioms of Science, ee published ig that 
body in 1847, contains the places of aa 10,000 stars, which experience 
shows to have been peleniae’ vith a degree e of pr ecision decidedly greater | 
than ra himself had supposed. And although his zones = pped but little | 
a their margins, so that only a small proportion of the oni shanti poner t 
‘Tropic, which we have detected, and which ar in his catalogue, is ' 
latively quite insignificant, so that the task of identification hoc been by ee 
less difficult than I was prepared to expect 
he recent publication, by Admiral Sands of the Washington O 
atory, of Gilliss’s Southern Catalogue of about 2000 stars affords a val 
supplement to Lacaille, since it gives observations of many stars for w. 
— _— reason to suspec i 
recent letters from home give reason to hope, this is to be followed 
Gilliss’s scant series of zone observations, comprising some 23; 
within 24° of the South Pole, observed in Chile — years 6 the So 
ern observer will receive a trul n his lab 
2x stralia w 
ready receiving, thanks to the industry and ability of Mr. Bilery, an an 
with the most exact which are furnished b the first observatories 
Northern Hemisphere. 
