ERRATA. 
g- 39> 
line 1 2, for 
7 0 40', read 
70° 40'. 
206, 
4> 
codu&ors 
conductors. 
251, 
4 from bottom, D C 
Be. 
2?7> 
2, 
XXIII. 
XXIII.* 
258, column 6th, 1. 13, 
30 
80. 
2^9* 
30 
80. 
261, 
16, 
refractor 
reflector. 
262, 
22, 
would 
could. 
264, 
2, 
refractor 
reflector. 
268, 
XXIV. 
XXIV. * 
289, 
*3» 
haurendae 
hauviendae. 
4 r 7» 
XXXIV. 
XXXIV. • 
4S 6 > 
near the bottom, 
Sipca, 
Spica. 
