Scientific amusements . unt it is an excellentfuel, but, being denser, it requires a greater supply of airto keep it in combustion than either wood or charcoal. We are not, however, entitled to consider coal as purecarbon. It always contains oxygen, hydrogen, and asmall quantity of nitrogen. Moreover, we meet withcertain mineral constituents, particularly sulphur, in com-bustion with iron. In the process of carbonization thesulphur, which is so prejudicial to the use of coal, isseparated from it: the product obtained is called this material, with the exception of its mineral con-stitue
Scientific amusements . unt it is an excellentfuel, but, being denser, it requires a greater supply of airto keep it in combustion than either wood or charcoal. We are not, however, entitled to consider coal as purecarbon. It always contains oxygen, hydrogen, and asmall quantity of nitrogen. Moreover, we meet withcertain mineral constituents, particularly sulphur, in com-bustion with iron. In the process of carbonization thesulphur, which is so prejudicial to the use of coal, isseparated from it: the product obtained is called this material, with the exception of its mineral con-stituents, consists entirely of carbon, and possesses agreat density, it forms the most valuable of all fuels whena high degree of heat is required in a small space. Wehave left many things unnoticed, which in the limitedspace at our disposal we could not conveniently includein our sketch of chemistry and chemical phenomena, butwe trust we have said enough to interest the reader andinduce him to search farther into MARVELS OF HEAT, LIGHT,AND SOUND. INTRODUCTION.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
