The name is absent

Local System and Draper Extension 63

Classes B and A, and a more even distribution through ali
galactic latitudes for the coder spectral classes.

The division into giant and dwarf stars for the classes
from F to M, a highly important phenomenon early em-
phasized by Hertzsprung and Russell, has a bearing on the

the Taurus region.

galactic concentration; giant K stars, for instance, are more
concentrated to the Milky Way than the dwarf K stars.
It is not expedient, however, to deal further here with the
intricacies and peculiarities of the distribution of stars of
various types. For the present purpose it need only be
pointed out that whether we are considering giant stars or
dwarfs, hot stars or cool, the Henry Draper Catalogue does

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