A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 309
est for the presence of car-bonic acid in wells is to lower a lighted candle, and ifits flame be extinguished it is inferred that the gas ispresent; but it does not follow that a man may safelydescend into such places though a candle may continueto burn ; the air may even then contain twenty per… … SOLID CARBONIC ACID. 297 If through a tube the breath be made to pass intolime-water, a deposit of carbonate of lime renders thewater milky; or if the breath be conducted through lit-mus water, the color changes to red; the air thus ex-pired from the lungs contains three or four per cent,…
Chemistry · Physics
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