Page 248: 'in once and a half times,'. 'once' is as printed (and may have been intended).
As it is part of a quote, it has been retained.
"'Once in eleven months,' writes Miss Clerke, 'the star mounts up in about 125 days from below the ninth to near the third, or even to the second magnitude; then, after a pause of two or three weeks, drops again to its former low level in once and a half times, on an average, the duration of its rise.'"
Page 256: 'Celæno' appears here in the text; 'Celaeno, 256' is the Index entry. Both are as printed.
Page 281: 285·9″ corrected to 285·9°
"Equuleus.
Σ 2737 or ε : 20 h. 54 m. + 3° 55′ : 5·7-6·2-7·1 : 285·9°, 73·8° : 0·53″, 10·43″. Triple with large instruments."
This follows the pattern of preceding
Draco.
Σ 2323 or 39: 18 h. 22 m. + 58° 45′ : 4·7-7·7-7·1 : 358·2°, 20·8° : 3·68″, 88·8″. Triple.
Page 282: 3·80° corrected to 3·80″ to match pattern.