CIVIL ENGINEERING, ARCHITECTURAL, AND BUILDING CONTRIVANCES. Sub-Class A.—Civil Engineering and Building Contrivances. 2226 Alger’s Patent Furnace Company (Limited), 4 Victoria Street, Westminster.—Model of an elliptical blast furnace, now erected at Stockton-on-Tees, and in blast. The advantage which the elliptical blast furnace pos sesses over other furnaces, consists in its combining large capacity with that degree of narrowness which insures the horizontality of the lines of equal temperature from the tuyhres upwards. Thus the whole of the ore arrives in a uniform state of preparation for fusion at a melting zone, possessing perfect uniformity of temperature. The quality of the iron is improved, the descent of the charge more uniform, and there being two openings for tapping, one at each end of the ellipse, the furnace is more under control, and bridging, or scaffolding, is greatly diminished. There is a saving of one-third in the cost of construction, one-third in the fuel; less labour is required, and there is, besides, a saving in the blowing. Any ordinary blast furnace can be altered to the elliptical form at a small expense. 2227 ] Allen, Edward Ellis, 5 Parliament Street, S.W.—Corrugated fibrous sheets for roofing, partitions, &c. [ 2228 ] Allen, H., 17 Percy Street, W.—Double model: a lift for manufactory; ditto for private house. 1. Model of a lift for raising or lowering invalids to I 2. The same adapted for raising or lowering goods at the different floors of a house with ease and comfort. 1 a factory or warehouse. 2229 Arbruth, G. B., & Thos. Scott, 18 Parliament Street.—Models of iron armour for ships and forts. [ 2230 ] Architectural Pottery Company, The, Poole, Dorset.—Mosaic, tesselated, and white glazed tiles; patent glazed bricks; and orange-tree tile-tubs. [ 2231 ] Ashby, Robert, 34 Smith Street, Chelsea, S'. IF.—Model for fireproof building. [ 2232 ] Atkinson, W., 1 Victoria Street, London.—Portland cement. Class X. ( 1 ) A