the northeast.

This completes the list of wonders visible at this precise time, but
the stars apparently are never still, and doubtless, while the student
has been passing from one constellation to another in the western and
southern skies, others have been rising in the east and northeast.

At ten P.M. the Lyre is well up, and Ophiuchus and Libra can be
discerned. At midnight Scorpius and Cygnus are ready to claim the
attention. By two o'clock A.M., Aquila, Delphinus, and Sagittarius
have risen, and at break of day Andromeda, Pegasus, and Capricornus
can be seen if the student has had the courage to remain awake this
length of time.

In no way can the seeming movement of the stars be better understood
than by actual observation. The observer must bear in mind that the
movement is an apparent one: that it is the earth that is moving and
not the stars. He has only to think of the analogy of the moving train
beside the one that is standing still, and the true state of affairs
will at once be evident.

To further appreciate this apparent change in the situation of the
constellations, the student should refer to the large plates
successively. In each successive one he will note the advancement
westward of the constellations mentioned above, rising in the east
late at night.

The student can best get an idea of this westward apparent movement of
the stars by noting the position of some bright first-magnitude star
from night to night. He will soon be able to calculate the position of
this star a month or more ahead, and this calculation applies to all
the constellations and stars.

It is not within the scope of this work to go into this matter in
detail. The author merely desires to mention this fact of apparent
change of position in the stars, a fact that will be noticeable to the
observer in a short time, and a fact that it is hoped he will be able
to explain to his own satisfaction with the aid of the foregoing
remarks.

It will be noticed that the stars on the diagrams are all numbered and
lettered. The numbers refer to the magnitude of the star,--that is,
the brightness of it, the first-magnitude stars being the brightest,
the second-magnitude stars two-and-a-half times less bright, etc.

The letters are those of the Greek alphabet, and the student if not
familiar with it is advised to consult a Greek grammar.

In the text, in referring to certain stars in the constellations, the
genitive case of the Latin n