By a more careful separation, according to Northern and
Southern Declination, we find that in the six hours' Right
Ascension from 9h. — 15h., there are accumulated 1111 neb-
ulae and clusters of stars in the northern hemisphere alone,
viz. :%



From 9h. lOh...
.. 90-


Froml2h. 13h...
.. 309


10 11 ..
. . 150


13 14 ...
.. 181


11 12 ..
. . 251


14 15 ..
.. 130



error of the press, the words south pole and north pole have been coq-
fovinded.
* " In this region of Virgo, occupying ahout one eighth of the whole
surface of the sphere, one third of the entire nebulous contents of the
heavens are congregated." — Outlines, p. 596.
i In reference to this barren region, see Observations at the Cape,
§ 101, p. 135.
{ I have based these numerical data on a computation of the numbera
yielded by the projection of the northern heavens as given in Obtenor
lions at the Cape, pi. xi.
NEBULA. 29

The actual northern maximum lies, therefore, between
12h. and 13h., vp-ry near the north galactic pole. Beyond
that point, between 15h. and 16h. toward Hercules, the dim
inution is so rapid that the number 130 is followed directly
by 40.
