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 for "We're all gentlemen here"—numerous questions, to which they could not reply, when one of the party took courage to ask him why fire burned. "Oh, because of the hydrogen in the air, of course, was the complacent answer. "I beg your pardon, but there is no hydrogen in atmospheric air."—" There is; I know the air well: it is composed one-half of hydrogen, the other half of nitrogen and oxygen." "You're surely confounding it with water."—"No, I am as well acquainted with the composition of water as with that of air; it is composed of the same gases, only in different proportions." This was too monstrous, and his opponent, while contradicting the statement, could not avoid a hearty laugh at its absurdity, in which the others joined without knowing why, which so raised the choler of this irascible gentleman, that it was most difficult to smooth matters. He contended that he was right and the other wrong; that his propositions were held by all chemists of eminence on both sides of the water; that, though he had not verified the elements of these fluids by analysis, he was perfectly acquainted with their nature; that the composition of air was a mere theory, but that his opponent's view was not held by any savans of note. The latter merely replied, "When you ext light a candle you may be thankful that there is no hydrogen in the air;" after which there was a temporary cessation of hostilities.

But towards night, being still unwarned by the discomfiture of the morning, he propounded some questions which his companions could not answer; among which was, "Why are there black sheep?" How he would have solved this difficult problem in natural history, I do