North and Sooth Areas, 0. 71 to 74 ; D. E. 55 to 58 ; F. 55, 56 ; G-. H. I. 55 to 57 ; J. 55, 56 ; K. 55 to 58 ;L. 55 to 57; M. N. 56, 57 ; O. P. 55 to 57; Q. R. 55; S. 55, 56.

North East Central Gallery, G. H. 49 ; I. 49 to 57.

The exhibited productions of Belgium furnish a very complete view, not only of the state of manufacturingindustry and the industrial arts, but also of the materials operated upon. The latter, which include the firstfour Classes of the Exhibition, are contributed by not fewer than 115 exhibitors. They include mineral fuelof various kinds; metals and metalliferous ores, as zinc, lead, and iron; specimens of whet stones; and avariety of chemical preparations. The agriculture of this country is represented by contributions of hops,wheat, barley, &c., from East and West Flanders . Among the articles recognised as belonging to the ThirdClass are some specimens of Belgian tobacco in leaf, called “ Wervicq .” The chemical preparationsalluded to include colours, glue, oils, dyes, &c. Flax in its different states of preparation for use is alsoexhibited. Kaw silk of native growth has been sent, and is represented in different qualities. Among themachinery are many interesting and important contributions, constituting the largest, in point of size, forwardedby any foreign State. After examination of the magnificent engines exhibited on the British side, it is inte-resting to compare them with the same powerful machines here shown. Among these is a marine engine, of140-horse power, and several locomotives, with railroad apparatus. The extraordinary results recentlyobtained by applying centrifugal force to the purification of sugar receive a valuable practical illustration in apatent engine exhibited, which produces this effect upon sugar in the loaf. The sugar is rendered perfectlywhite, and free from impurity, by this apparatus. Machines employed in textile manufactures, carriages, andagricultural implements, form likewise an interesting feature in this collection. The display of fire-arms islarge, and includes, among others, the “ needle ” gun, presumed to have great precision in use. The musicalinstruments, philosophical apparatus, &c., also should receive notice. A large number of exhibitors appear asrepresentatives of textile productions in Belgium ; the linen manufacture naturally assuming the chief promi-nence. From Brussels , as might be expected, a beautiful collection of the finest and most costly lace has beensent. The lace manufactures of other towns are also represented. Some of the beautiful Savonnerie carpetsare also exhibited. In glass, china, and mineral manufactures, the specimens exhibited indicate the presentstate of those arts in Belgium . In furniture, the articles exhibited are principally of a small size. A largenumber of miscellaneous objects give variety and extent to this collection. The sculptures, many of whichare placed in the main avenue, will be regarded with much interest. Upwards of 500 exhibitors appear, onthe whole, as the representatives of Belgium at the Exhibition.—E. E.

1 GUILLAUME, JEAN AxTONTO, Ilovi/jny, Luxembourg .

(Agent, Mme. Hulme, 3 Duke Street, BloomsburySquare.)

Samples of hones.

2 Otte, Charles Joseph, Vielsalm , Luxembourg .

(Agent, M. Cuylits, 55 Gracechurch Street.)Samples of hones, rough and prepared.

3 Lamberty, Christopiie, Vielsalm , Luxembourg .

(Agent, H. Cuylits, 55 Gracechurch Street.)Samples of hones.

4 Oeeergeld, Pieere Joseph, Vialsalm, Luxembourg .

(Agent, M. Cuylits, 55 Grraceeliurcii Street.)Specimens of whet-stones.

[The hones of Belgium are good and well known. A

considerable variety is obtained from the slaty rocks ofthe Luxembourg , available for many purposes. Most ofthe whet-stones of commerce are silicates of alumina, ob-tained from metamorphie rocks. They are of great hard-ness, of light green colour, slaty fracture, and generallyassociated with clay slates.—D. T. A.]

5 Colette-Doucet, F. J., Bertrix, Luxembourg .Specimens of slate-pencils, whet-stones, and roof-slating

G Societe des Halts Fottrneattx de Pommeroeul,

ITalnault.

Specimens of pig iron, Nos. 1, 2, 3, 4.

Specimens of bar, iron, grey, mottled, and white.