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EXHIBITION, BRITISH INDUSTRIAL. 



Nerbudda Valley, good Bar iron, but only in 

 small pieces, can be made and sold by the native 

 smelters under 51. per ton. 



Swedish Boat Plates. Sweden's chief ore is 

 magnetic oxide, of which fine and character- 

 istic specimens from various localities were ex- 

 hibited. An instructive series of the far-famed 

 Dannemora ores and the associated rocks spe- 

 cially deserved attention. The ores from this 

 locality are among the finest in the world : and 

 the iron which they yield always commands a 

 high price, on account of its producing good 

 steel. The Swedish iron ores differ much in 

 quality, even when in appearance they closely 

 resemble each other. 



One of the remarkable objects shown was the 

 fore part of an iron paddle steamer, 200 feet 

 long and of 120 horse power, which, during a 

 fog in September, 1860, and while going at the 

 rate of eight or nine knots an hour, struck on a 

 rock. The iron was " crumpled up like apiece 

 of brown paper," and yet the vessel got off and 

 proceeded without difiiculty to Stockholm, 

 about 100 miles distant. The plates were made 

 and the vessel was built at the Motala Iron 

 Works. 



GALVANIZED METALS. Amongst the exhibitors 

 of Galvanized Metals were Morewood and Co., 

 who say that their materials are more durable 

 than zinc. They may be applied in the form 

 of tiles, which are 3 feet by 2 feet, and are 

 curled at the edges to finish as rolls, and are 

 stiffened by transverse grooves. They are also 

 made in sheets of 500 feet and upward in 

 length : thus they can be laid with great expe- 

 dition by any laborer who can use a hammer; 

 whilst considering that boarding is not required, 

 the cost, say the patentees, is less than asphalted 

 felt. Amongst the other productions of the 

 same manufacturers, were welded-iron water 

 and gas tubes. 



With galvanized corrugated iron Morton and 

 Co. can cover an area of 100 feet square (plates 

 and uprights only, furnished them) in five 

 spans, for 370. They can provide and erect 

 an iron cottage with five rooms and entrance 

 porch for 120. 



For Zinc Roofing, the Vieille Montagne Com- 

 pany, and their manufacturing agents, F. Braby 

 & Co., were exhibitors. Zinc is now constantly 

 employed in Paris, for buildings much larger 

 in scale, and more substantial in construction, 

 than the London houses. 



Wolston's Torbay Iron Paints for coating 

 materials which are to be under water, or in a 

 position to be affected by damp, are manu- 

 factured at Brixham, Davenport, and are suc- 

 cessfully used in dockyards and public works. 

 A caisson in Woolwich Dockyard, painted nine 

 years since, is in a perfectly sound condition, 

 both under water and between wind and water. 

 It is is also said that the Torbay paints have 

 been found to stop corrosion that has set in. 



Webster and Horsfall exhibited a case of 

 Iron Wires, including music, needles, and flat 

 spring wires, the latter manufactured from the 



patent steel wire, which was also shown ; with 

 samples of submarine telegraph cables, coal-pit 

 ropes, and ropes for ships' rigging. There 

 were shown two coils of Steel Wire without a 

 weld, of the extraordinary weight of 1 cwt., 

 said to be the heaviest coil ever manufactured. 

 The whole power of a 100-horse engine was 

 required to roll it, and Webster and Horsfall's 

 mill is the only mill in the country at which it 

 could be made. This wire is to be used for 

 pit-guides, in lieu of the ordinary iron guides, 

 liable to frequent breakage at the welds. 



Smith and Co. sent from Halifax a bloom, or 

 piece of the best Swedish iron, and specimens 

 of all the stages of manufacture from it down 

 to the smallest sizes of wire. The first stages 

 down to the rod gauging No. 2 or 4, are manu- 

 factured while the iron is hot ; after that the 

 iron is drawn cold through steel plates similar 

 to the small model exhibited, with some sizes 

 of wire in it; and as the process of drawing 

 hardens the wire, it has to be annealed or soft- 

 ened at various stages, and then drawn again. 

 The above piece of bloom, measuring only 8J 

 inches long and 3 inches square, and weighing 

 20 Ibs., would, if drawn as small as the finest 

 wires exhibited in the same case, measure 110 

 miles in length. They will give you 1,000 feet 

 of wire out of a brass farthing ; 70,000 feet of 

 wire, or a sheet of brass, 12 feet square, that 

 will not exceed one pound in weight. 



The Hereford Screen, made by the Skidmore 

 Art Company, at Coventry, for Hereford Cathe- 

 dral, is probably the finest piece of modern 

 metal work in existence. It has been executed ' 

 from Mr. Scott's designs since January, 1862 ; it 

 is much larger in its dimensions than its com- 

 panion at Lichfield, and, indeed, is the largest 

 piece of architectural metal work ever executed. 

 Iron is of course the principal material used, 

 though in the decorative details copper and 

 brass are largely introduced. In these com- 

 binations the fine examples which the early 

 metal workers have transmitted to our time 

 are studied with conscientious care, so as to 

 adhere to the lessons of the past in a work that 

 in itself is perfectly original. Thus, in the 

 Hereford screen we find the iron wrought both 

 into true grilles, and also elaborated after the 

 manner of the early chasers into the richest 

 iron filigree. The brass and copper work has 

 been dealt with in the same spirit, and the 

 capitals supporting the screen are most happily 

 adjusted to the requirements of architectural 

 conventionalism. The copper flowers by which 

 these are enriched have the softness and beau- 

 ty of nature, though all, after the old style, are 

 worked out with the point of the hammer from 

 sheets of copper. The copper is throughout 

 left of its own natural color, but the brass work 

 is intermixed with broad masses of vitreous 

 mosaic. Where paint is used upon the iron, all 

 the colors employed, with the exception only 

 of the green, have been obtained from oxides 

 of the metal itself; though the coloring and 

 gilding have been applied only with a view to 



