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South Aeeas, L. M. 68.

ftoyal Commissioner in London , Regnab WeStenhoiz, Esq., 26 Mark Lane; Agent, C. J. Majob, 21 Lilliter Street.

bout forty-seven exhibitors represent this country in the Exhibition. The articles exhibited illustratev eral of the Classes, and include raw produce, machines, manufactures, and fine arts. Among the machinery,j. e a pump applicable also as a fire-engine, a steam-whistle also serving as a water-gauge for steam-boilers, aa j ^-composing machino, and a chaff-cutting machine. Among philosophical instruments are several clocks8oi Wato ^ es > inclusive of an astronomical clock of accurate construction, with a new escapement. There is alsoba] 116 a l :, l )aratus f° r philosophical experiments, and several surgical instruments. Several nautical compasses,BUrf 110 ■ ^ a new are exhibited. Interest will also be attached to a specimen of mechanical ingenuity

int.l^ n ^ 0nce * n ^ 10 f° rm a O i a horately made and containing a number of small files and rasps within it.dis'- Cel ’ amic art two vel T different classes of objects are shown, but both of equal interest, though of greatlyOtyn ? 1 ^ ar V£dlle > these, the first are specimens of the black crockery of the Jutland peasantry, made at theirhomes, and ‘ glazed ’ by being smoked so thoroughly as to render them impervious to water. The other,the productions of the Copenhagen Royal Porcelain Manufactory, consisting of vases, figures, &c., in a hightil i-°^ ar ^‘ ® ne tiro most interesting articles in this collection, to those concerned in the applications ofe ?.discoveries of philosophy to the requirements of mechanism, is to be found in the electro-magnetic enginetQ jilted by a native of this country. This engine illustrates the practical application of the electric current,‘he development of mechanical force through the induced magnetism of certain masses of soft iron. A con-J' le rable length of stroke has been gained in the machino, and the principal remaining problem, for its practicalc j ■thoyment to the purposes of a prime mover, is the discovery of an inexpensive and continuous source of the, e °tric current. When this can be found, if it may be considered possible, then electro-magnetic engines willa great extent supersede those moved by steam and other powers..—II. E.

Puggaaed, II., & Co., Copenhagen— Producers,a mples of barley, grown in the island of Moen in 1850.Sa «Tles of wheat

Kolbjoensen, Konead, Meikamk —Proprietor.ain ple of Iceland wool.

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g °? p > Attdeeas Ludwig, Copenhagen — Manufacturer.

Will, of white lamb-skins for glovers, prepared

of r P „ > exhibited for their softness and susceptibility

tv 8 d y e8 ‘

^hality Stui8 J a l 80 prepared with alum, and of similar

[Th^ 6 8 ^ ee P' s ' £ “ ls > prepared with alum, for shoemakers,tuwii, ° ^ roc . ess °f preparing leather for gloves, &c., is called^‘oted ' and bmib skins are the varieties principallyari ( J the J 1 * .^ s tnanner - After the skins have been washed°f bran ^ relllovo d> they are put into a mixture consistingncl w ater, and afterwards are manipulated with a

solution of alum and salt. The subsequent preparation ofthe skins consists in applying a paste of flour and yolk ofeggs, washing, smoothing, drying, and polishing. Theleather is then fit for manufacture into gloves.—R. E.]

4 Deewsen & Sons, Silkeborg , Jutland —Manufacturers.

Specimens of paper, glazed when in its whole length bya glazing machino constructed by the exhibitors. Thismachine effects a considerable saving in the workingpower, as, with the assistance of two men, it will glazedouble the quantity of paper in a given time that six mencould in the old way between plates. It produces greatsmoothness without damaging the paper; whereas the pro-cess of glazing with plates makes the paper transparent.This machine will also glaze paper of all kinds in the sliapoand length in which it leaves the maeliine.

[The method of glazing paper in England is performedby causing it to pass between higlily-polished steel-rollors.

5 C

[Oejficial Illustrated Catalogue.]