supposed that this pair is only an optical double, but a long time must
elapse before a decisive opinion can be pronounced on such a point.

The star [sigma] Scorpionis is a wider but much more difficult double,
the smaller component being below the 9th magnitude. The colour of the
primary (4) is white, that of the secondary maroon.

The star [xi] Scorpionis is a neat double, the components 7"·2 apart,
their magnitudes 4-1/2 and 7-1/2, their colours white and grey. This
star is really triple, a fifth-magnitude star lying close to the
primary.

In Ophiuchus, a constellation covering a wide space immediately above
Scorpio, there are several fine doubles. Among others--

39 Ophiuchi, distance between components 12"·1, their magnitudes 5-1/2
and 7-1/2, their colours orange and blue.

The star 70 Ophiuchi, a fourth-magnitude star on the right shoulder of
Ophiuchus, is a noted double. The distance between the components about
5-1/2", their magnitudes 4-1/2 and 7, the colours yellow and red. The
pair form a system whose period of revolution is about 95 years.

36 Ophiuchi (variable), distance 5"·2, magnitudes 4-1/2 and 6-1/2,
colours red and yellow.

[rho] Opiuchi, distance 4", colours yellow and blue, magnitudes 5 and 7.

Between [alpha] and [beta] Scorpionis the fine nebula 80 M may be looked
for. (Or more closely thus:--below [beta] is the wide Double [omega]^{1}