"Owing to the imperfection of the furnaces, the quantity of charcoal used must have been quadruple the present consumption for the same results. The metal, as it was extracted from the ore, fell down into the bottom of the crucible. In proportion as the mass of metal increased, a workman, with a poker made of damp green wood, brought out the scoriæ which floated on the top, and stirred the metal so as to fine it. It is proved that these wooden pokers or poles were made use of in all the furnace-works. A quantity of morsels of scoriæ is found which, having been in a soft state when extracted, have retained the imprint of the piece of wood, the end of which was evidently charred. M. Morlot, in his article on the Roman ironworks at Wocheim, in Upper Carniola, has also noticed the existence, in the scoriæ, of frequent traces of pokers, sometimes round and sometimes three-cornered in shape, but all of them must have been made of iron, whilst throughout the whole of the Jura we have never recognised the traces of any but wooden implements of this kind. "Owing to the imperfection of the furnaces, and especially, the deficiency in the draught caused by the want of bellows, the metal contained in the ore could be but very imperfectly extracted; the scoriæ are therefore still so very rich in iron that, about twenty years ago, the manager of the ironworks at Untervelier tried to use them over again as ore. Accumulations of this dross, measuring from 100 to 200 yards square, may be seen near certain furnaces-a fact which would infer a somewhat considerable production of iron. The examination of these scoriæ proves that iron was then made by one single operation, and not liquid pigs fit for casting, or to be converted into iron by a second series of operations. "The iron produced was introduced into commerce in large blocks, shaped like two quadrangular pyramids joined at the base, weighing from 12 to 16 lbs. One of these pieces was found near a furnace which had been demolished in order to establish a charcoal furnace, in the commune of Untervelier, and another in one of the furnaces of Boécourt.