70 Sidereal Explorations
A general consideration of the distribution figures shows
least concentration to the galactic circle for solar type stars
(Class G) ; they are probably largely dwarfs. A higher
concentration is shown by stars of Class A, and also a dis-
Figure 8. Class G stars of magnitudes 10.1 to 11.0 in the Taurus
region of the Henry Draper Extension.
tinct unevenness in their frequency throughout the field.
The most important deficiency for the Class A stars is at
right ascension 5h 20w, declination +250. The same “hole
in the sky” is shown clearly for some of the other classes;