golden fifth-magnitude
star, combined with a blue or lilac star of the seventh magnitude,
distance 14", p. 24 deg.. Sigma 938 is a difficult double, magnitudes six
and a half and twelve, distance 10", p. 210 deg.. Sigma 921 is double,
magnitudes six and a half and eight, distance 16", p. 4 deg.. At the spot
marked on the map 1424 we find an interesting cluster containing one
star of the sixth magnitude.

The remaining stars of Monoceros will be found on map No. 3. The double
and triple stars to be noted are S, or Sigma 950 (which is also a
variable and involved in a faint nebula), magnitudes six and nine,
distance 2.5", p. 206 deg.; Sigma 1183, double, magnitudes five and a half
and eight, distance 31", p. 326 deg.; Sigma 1190, triple, magnitudes five
and a half, ten, and nine, distances 31", p. 105 deg., and 67", p. 244 deg..
The clusters are 1465, which has a minute triple star near the center;
1483, one member of whose swarm is red; 1611, very small but rich; and
1637, interesting for the great number of ninth-magnitude stars that it
contains. We should use the five-inch for all of these.

Canis Minor and the Head of Hydra are also contained on map No. 3.
Procyon, alpha of Canis Minor, has several minute stars in the same
field of view. There is, besides, a companion which, although it was
known to exist, no telescope was able to detect until November, 1896. It
must be of immense mass, since its attraction causes perceptible
perturbations in the motion of Procyon. Its magnitude is eight and a
half, distance 4.83", p. 338 deg.. One of the small stars just referred to,
the second one east of Procyon, distant one third of the moon's
diameter, is an interesting double. Our four-inch may separate it, and
the five-inch is certain to do so. The magnitudes are seven and seven
and a half or eight, distance 1.2", p. 133 deg.. This star is variously
named Sigma 1126 and 31 Can. Min. Bode. Star No. 14 is a wide triple,
magnitudes six, seven, and eight, distances 75, p. 65 deg., and 115", p.
154 deg..

PROCYON AND ITS NEIGHBORS.

In the Head of Hydra we find Sigma 1245, a double of the sixth and
seventh magnitudes, distance 10.5", p. 25 deg.. The larger star shows a fine
yellow. In epsilon we have a beautiful combination of a yellow with a
blue star, magnitudes four and eight, distance 3.4", p. 198 deg.. Finally,
let us look at theta for a light test with the five-inch. The two stars
composing it are of the fourth and twelft