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SPLENDID ASTRONOMICAL lN,rRuNENT,
Tho great Rci1riion Circle, ordered for
the National Observatory some Two years
ago from the Mcs.rs. Eucl, ofMunich, say.
the Washington Union OF the lllh in,l.,
Ia, arrived. II came in eight arg, boxes,
aud is one Of the most splendid instruments
hot to be used a. nm eqiatorial-in the
world. Il has an object glass OF inches,
with a focal distance Of los. II has two
circles Of l fee, each, with IL reading mi
,rDscopcs. Il Is 50 constructed that il j.
is own cullimalor; and is eye pieces, Of
the highest power, are collimaling eve.
pieces. has col.imror also, through
the axis ofrolnlion. II has The advantage
Of reversing readily between Two piers, in.
stead of at the side Vi lhcm-a most impor.
tant point. Yet soprr.cci is the mnchinc.
~ Tor reversing the instrument, that the
immense weight-more than two thousand
pounds-chn be raised with the little iIn.
ger In all lis paris, il bears marks Of the
most exquisite workmanship. il was made.
10 tho mnulesl parts, after plans and draw.
ings furnished by Lieut.. Maury, supefin.
lendcnt Of tho National Observatory, and is
pronounced by the makers TO be tho best
and most perfect instrument that has ever
come from their hands. II is for the pur
pose among other thing, Of investigating
some of tho most difficult problems in
practical aslronomy-yiz: pnrnllat OF the
liked stars, almosphcricll relractions, and
the effect of the moon upon the piumb.linc.
We understand the duties upon il amounted
to upwards Of $500.