PROSPECTUS FOR
THE SIDEREAL MESSENGER
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A Monthly Journal dtUoted 10 Astronomical Sci


ence, conducted by O. M. MITCHELL, Director


of the Cincinnati Observatory.
VNHERE does not exist, at present. in the world,
Il a single popular journal, from whose pages
the general reader may follow the rapidly advancing
progress Of Modern Astronomy.


The great truths now developing, are only to be
found in the Transactions of learned Societies. or
locked up in the annual volumes Of Observations,
in strict technical form.


The erection of the Cincinnati Observatory, by
the voluntary efforts of more than seven hundred
persons of all ranks conditions and callngs, in one
single city, has demonstrated in the most satisfac-
tory manner, the interest which the people take in
the science Of Astronomy. OF these seven hundred,
very few make any pietensions to scientific attain.
ments in Astronomy and yet all are anxious to
learn not only what is doing in their own Observa-
tory, but likewise what discoveries are making
throughout the world.


The capital instrument Of the Cincinnati Obser-
vatory is the Great Achromatic Refracto the second
Telescope in the world. To record, in plain and
simple form the results Of the researches made with
this lnsrument--to present the earliest Astronomi.
cal intelligence from all parts Of the wordto fur
nish TO our conntrymen, in their own language the
most interesting articles from foreign Astronomical
lournas--to excite interest among the people in
the elevating study Of Astronomy to give a
permanent support to the Institution under whose
auspices this publication is made--wi be the OBJ
ects of the SrDERAL MESSENGER.


All subscribers to this journal, not residing in the
city Of Cincinnati, cordially invited to visit the
Observatory, subject to the regulations which
govern the members Of the Society.


All members of the Astronomical Society. who
may subscribe for this journal, will be entitled to
the privilege Of introducing TO the Observatory, in
their company, not more than two strangers at the
same time. ~


The MKssxScER will contain eight quarto pages
and may be conveniently bound into volume at the
end Of twa years.


Each number will be accompanied by tho.
graphic engraving. ~


PRrcE.--T Three dollars per annu.s, to he paid in
varably on the delivery Of the first No. Of each an
nusI volume. a4q may ll-ltd3tw.