. A course of six lectures on the chemical history of a candle [electronic resource]: to which is added, a lecture on platinum. d in the flame in a freestate. The difference is solely due to the solidparticles not being separated before the gas isburnt. You observe that there are certain productsas the result of the combustion of a candle; andthat of these products one portion may be con-sidered as charcoal, or soot; that charcoal, whenafterwards burnt, produces some other product;and it concerns us very much now to ascertainwhat that other product is. We showed thatsomething was going away; a
. A course of six lectures on the chemical history of a candle [electronic resource]: to which is added, a lecture on platinum. d in the flame in a freestate. The difference is solely due to the solidparticles not being separated before the gas isburnt. You observe that there are certain productsas the result of the combustion of a candle; andthat of these products one portion may be con-sidered as charcoal, or soot; that charcoal, whenafterwards burnt, produces some other product;and it concerns us very much now to ascertainwhat that other product is. We showed thatsomething was going away; and I want younow to understand how much is going up intothe air; and for that purpose we will have com-bustion on a little larger scale. From thatcandle ascends heated air, and two or threeexperiments will show you the ascending cur- THE FIEE-BALLOOK. 51 rent; but, in order to give you a notion of thequantity of matter which ascends in this way,I will make an experiment by which I shalltry to imprison some of the products of thiscombustion. For this purpose I have here whatboys call a fire-balloon; I use this fire-balloon. Fier. 10. merely as a sort of measure of the result of thecombustion we are considering; and I am 52 THE FIKE-BALLOO^. about to make a flame in such, an easy andsimple manner as shall best serve my presentpurpose. This plate shall be the cup, wewill so say, of the candle; this spirit shall beour fuel; and I am about to place this chimneyover it, because it is better for me to do so thanto let things proceed at random. Mr. Andersonwill now light the fuel, and here at the top weshall get the results of the combustion. Whatwe get at the top of that tube is exactly thesame, generally speaking, as you get from thecombustion of a candle; but we do not get aluminous flame here, because we use a substancewhich is feeble in carbon. I am about to putthis balloon—not into action, because that is notmy object,—but to show you the effect whichresults from the action o
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectchemistry, bookyear18
