“Page 35.--‘Now, as regards the prices ruling at present for Nürnberg ultramarine, these are, as compared with those of the French, more than 500 per cent. cheaper. Blue ultramarine costs, namely, in Nürnberg, quality No. 0, 10 florins per lb.; a lighter quality, which is nevertheless darker than the darkest French at 100 francs, 5 fl. per lb.; a third quality likewise darker than the seconds French at 60 francs, 3 fl. per lb. Green ultramarine, 3 fl. 10 kr. per lb. “‘How much further, however, these low prices will be yet reduced after the completion of the factory, may be gathered from a detailed calculation of cost which the chief of this factory has made himself responsible for as being the highest estimate. This calculation of cost is based upon the weekly production of 10 cwt., which the factory will soon be able to turn out, and upon a necessary cost of plant and working capital of 90,000 Rhenish florins, as follows:-- “Page 36.--‘Calculation of cost of 500 cwt. blue and green ultramarine:-- Fl. (1) Raw material and cost of transport 10,000 (2) Fuel, including cost of transport of 7200 cwt. of coal at fl. 1.30 10,800 (3) Wages of 20 operatives at fl. 250 per annum 5,000 (4) Utensils and apparatus 3,200 (5) Buildings and repairs 3,400 (6) Keep for two horses 600 (7) Expense of factory 3,000 (8) Cost of administration 2,000 (9) Unforeseen matters and accidents 2,000 (10) Interest on building and working capital at 5 per cent. 4,500 (11) Public taxes, insurance, &c. 500 ------ Thus 500 cwt. will cost Fl. 45,000 “ 1 “ “ Fl. 90 “ 1 lb. “ 45kr. “‘Forty-five kreutzers, therefore, in accordance with the above, will in future be the production cost of a colour which, as is well known, could not be obtained for several hundred guldens, while in green it was not procurable at any price.’ “I venture to hope that the foregoing communication may yet prove of some interest in chemical circles.” 1 florin or gulden = 2_s._ 1 kreutzer = ½_d._