| http://www.w3.org/ns/prov#value | - Furfural, the principal aldehyde, which we have found present in marked quantities in the cigarette smoke of a very popular tobacco, is stated to be about fifty times as poisonous as ordinary alcohol, and small doses cause 'symptoms of transient irritation, such as ataxia, tremors and twitching,' while in adequate quantities furfural 'gives rise to epileptiform convulsions, general muscular paral
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