PROSPECTUS FOR
THE SIDEREAL MESSENGER.
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THE SIDEREAL l. MESSENGER,
Monthly Journal depoted TO Astronomical Sci


frce conducted by O. M. MITCHELL, Director


of the Cincinnati Observatory.
YNHERE 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 callings in one
single city, has demonstrated in the most satisac-
tory manner, the interest which the people take in
the science of Astronomy. Of these seven hundred,
very few make any pretensions 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


Inc capital instrument of the Cincinnati Obser-
vatory is the Great Achromatc Refractor tho second
Telescope in the world. To record. in nlo;n ond
simple form, the results of the researches made with
this lnstrument--to present the earliest Astronomi.
cal intelligence from all parts of the world-to fur
nish TO our conntrymen in their own language, the
most interesting articles from foreign Astronomical
Jo"heiS.o W eAcno an interest among the people, in
the eievating study of Astronomy-and to give a
permanent support to the Institution under whose
auspices this publication is made--wil be the OBJ
jects OF the SIDERAL MESSENGER


All subscribers to this Journal not residing in the
city Of Cincinnati are cordially invited to visit the
Observatory, subject to the same 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.


Ihs MRssESsEn will contain eight quarto pages,
and may be conveniently bound into volume at the
end of twa years.


Each number will be accompanied by litbo.
graphic engraving.


PRrcE.-Three dollars per annu4 to be paid in
variabiy on the delivery Of the first No. of each an
nual volume. may ll-ltd3tw.