313240214-Elements-of-Chemistry-Lavoisier_0179.pdf - The Project Gutenberg eBook of Elements of Chemistry by Mr Lavoisier for some operations might be

313240214-Elements-of-Chemistry-Lavoisier_0179.pdf - The...

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08/08/2015 The Project Gutenberg eBook of Elements of Chemistry, by Mr Lavoisier. 179/229 for some operations might be hurtful in others; wherefore we must have furnaces of different forms, constructed for different purposes, in our laboratories: There ought especially to be several of the kind now described of different sizes. The reverberatory furnace, Pl. XIII. Fig. 2. is perhaps more necessary. This, like the common furnace, is composed of the ash­hole HIKL, the fire­place KLMN, the laboratory MNOP, and the dome RRSS, with its funnel or chimney TTVV; and to this last several additional tubes may be adapted, according to the nature of the different experiments. The retort A is placed in the division called the laboratory, and supported by two bars of iron which run across the furnace, and its beak comes out at a round hole in the side of the furnace, one half of which is cut in the piece called the laboratory, and the other in the dome. In most of the ready made reverberatory furnaces which are sold by the potters at Paris, the openings both above and below are too small: These do not
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