. Chemistry for farmers. Agricultural chemistry. 40 AGRICULTURAL t'HExMIBTRY. to facilitate the introduction of the liquid. Another tuhe, which must barely pierce the cork, should extend under the bell glass, over the pneumatic trough. (Fig. 10.). Fig. 10. No heat is rec^uired in the preparation of this gas, but much will be evolved, if the acid is occasionally added to the mixture in the gas bottle. Great care must be observed to avoid the mixture of atmosphere with this gas, as this combination, when inflamed, will produce a violent explosion. When pure, hydrogen will take fire on the applic
. Chemistry for farmers. Agricultural chemistry. 40 AGRICULTURAL t'HExMIBTRY. to facilitate the introduction of the liquid. Another tuhe, which must barely pierce the cork, should extend under the bell glass, over the pneumatic trough. (Fig. 10.). Fig. 10. No heat is rec^uired in the preparation of this gas, but much will be evolved, if the acid is occasionally added to the mixture in the gas bottle. Great care must be observed to avoid the mixture of atmosphere with this gas, as this combination, when inflamed, will produce a violent explosion. When pure, hydrogen will take fire on the application of a lighted taper, and burn with a feeble flame and the most intense heat, especially when the jet is joined by one of oxygen. This union of the gases in the jet forms what is called the oxy-hydrogen blow-pipe. Hydrogen, though combustible, is not a supporter of combustion. Any substance which is lighter than the atmosphere will rapidly escape from a vessel, unless it is inverted. Is any heat required in its preparation ? Why should we avoid a mixture of atmosphere with it when burned? What are its properties? What elfect if united with oxygen when burned ?. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, C. B. [from old catalog]. Cincinnati, W. B. Smith & co
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectagriculturalchemistr
