Describir: A practical guide for puddling iron and steel / by Ed. Urbin, engineer of arts and manufactures. A prize essay read before the Association of Engineers, graduates of the School of Mines of Liege, Belgium, at the meeting of 1865-66. To which is added a comparison of the resisting properties of iron and steel. By A. Brüll. Translated from the french, by A. A. Fesquet, chemist and engineer