Being to treat of the Doctrine of Sounds, I hold it convenient to premise something in the general concerning this Theory; which may serve at once to engage your attention, and excuse my pains, when I shall have recommended them, as bestow'd on a subject not altogether useless and unfruitful.Narcissus Marsh, 1683/4, Phil. Trans. Roy. Soc. Lond., 156:472-486.
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