took up the subject, and, by an early publication, preceded Dr. Draper.
When we consider the attention the photography of stellar spectra is
receiving at the present time, in nearly all the great observatories in
the world, it may well be regarded as the third great advance in
astronomy.

What will be the fourth advance, and how will it be brought about? To
answer this question we must consider the various ways in which
astronomy, and for that matter any other science, may be advanced.

First, by educating astronomers. There are many observatories where
excellent instruction in astronomy is given, either to the general
student or to one who wishes to make it his profession. At almost any
active observatory a student would be received as a volunteer assistant.
Unfortunately, few young men can afford to accept an unpaid position,
and the establishment of a number of fellowships each offering a small
salary sufficient to support the student would enable him to acquire the
necessary knowledge to fill a permanent position. The number of these
scholarships should not be large, lest more students should undertake
the work than would be required to fill the permanent paying positions
in astronomy, as they become vacant.

In Europe, a favorite method of aiding science is to offer a prize for
the best memoir on a specified subject. On theoretical grounds this is
extremely objectionable. Since the papers presented are anonymous and
confidential, no one but the judges know how great is the effort wasted
in duplication. The larger the prize, the greater the injury to science,
since the greater will be the energy diverted from untried fields. It
would be much wiser to invite applications, select the man most likely
to produce a useful memoir, and award the prize to him if he achieved