n th'a point we have the experience of blast furnaces in the making of ribbon saws, and of late yews they have MR. CHARLES FAIRflAIRN. given much attention to the production of all kinds of saws as an indication of what might be saved by this means alone. Dr. Joule, in some experiments conducted… … means of the file, scarcely ever left it of fresh charge of fuel), and at the same time exactly the same thickness as the rest of the FAIRBAIRN'S FURNACE. assisting to bring the fresh fuel into active blade; thus it either created extra friction or combustion more rapidly; the heat is again was…
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