5th. It will meet the moon four days after its discharge,
precisely at midnight on the 4th of December, at the moment of
its transit across the zenith.

The members of the Gun Club ought, therefore, without delay, to
commence the works necessary for such an experiment, and to be
prepared to set to work at the moment determined upon; for, if
they should suffer this 4th of December to go by, they will not
find the moon again under the same conditions of perigee and of
zenith until eighteen years and eleven days afterward.

The staff of the Cambridge Observatory place themselves entirely
at their disposal in respect of all questions of theoretical
astronomy; and herewith add their congratulations to those of
all the rest of America.
For the Astronomical Staff,
J. M. BELFAST,
_Director of the Observatory of Cambridge._





CHAPTER V


THE ROMANCE OF THE MOON


An observer endued with an infinite range of vision, and placed