From the Saturdag Eeening posf.
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 U STATES Mlsr- phiiadelphia. The Nila1 appears to be iaYorite place of re- sssst for tic aillong our fciov.c;,,- zens. Nisltefs pass in by the Chesnut-st. front at all hours of the morning, and are at once m beautiful and capacious buildino well adapted to the purposes for which ii was erected. When we look around its ample dimensions we wonder hew | ;yaa possible to accommodate So extensive business as was done in the miserably con- iined apartments if the old coming house in Seventh street, and fail not, at the same time, to admire the neat and ample beauty ot the present building. The first object which attracts attention on entering, is huge engine at the opposite end of the building, the noise of which, added 10 the ineessant jarring of the dies gives token of the laborious purpose to which 1t is applied. Ihs engine of 30 horse power, is the most highly finished specimen of the steam engine, we have ever witnessed. The shafts, upright and horizontal, arc of pol lshed metal, and most of the ceg-wheels are of brass. The huge fly-wheels run with the precision of watch wheel, while the various and totally different purposes to which it's power is applied. strike the be- holder with admiration of the skill and in- genuty of the meehanest Rush and Muh- lenburg, of this city, constructed this engine; it's cost was about S0,o0O.

 From the hot rooms in which the million IS converted into ingots, we enter the rooms where the ingots are passed through a s,,c- cession of steel rollars until they assume | the Hafuacc and fbfnpa.r o1. . hoop; thence we assend into room where these thIn bars are passed through a steel guage, to give them uniform thickness. equal to that of the half dollar. A punch worked by the same engine, cuts out the silver of proper size; the scraps of silver are melted over again into ingots. From tms room the prepared bits are taken down into the die room, where they are passed on their edges, through machine which giyes them the impression that they bear upon the edges. They are thence handed | over to the coiners, by whom they are placed Tn tube in pile foot high, whence they drop, one at d time, on slide that conveys them directly to the dies. Here they receive the proper impression on each side, from dies forced together by means of powerful fly-press worked by three men.

 The instant the coin receives its proper impression, 1t is forced off the die into q box ready to receive 1t, and gives place to another, which immediately occupies the | same position, and undergoes tic same op- eration.

 After having gone through the whole es- taibisnieri, the impression left upon the the mind IS that of astonishment and wonder, that an end of such immense importance as the supply of coin for the whole nation, can be obtained by means apparently so simple and of such ready comprehension. The spectator going through alone, needs no one to explain this or that operation. Eve y thing explains itself on the instant; for every thing is free from mystery or con- cealment, while the excellent condition of the establishment, and the extreme po- llteness to strangers, manifested by every person about 1t, materially enhances the pleasure of visit to the .nint of he Uni- | fed .yTafes