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* 1.1TO try whether Ducks, which continue a good while under Water without Re∣spiration, would bear the absence of Air much longer, than other Animals in Vacuo, we inclos'd a Duck in a Receiver, which was third Part fill'd by her: The Air being exhausted
she continu'd well longer than a Hen would have done; yet in a Minute she was discompos'd; and in two, she, after violent Conuvlsions, hung down her Head as if dead, but presently re∣viv'd when Air was let in. Being shut up much longer in Common Air, she was not Discom∣pos'd.
Animals shut up in Vacuo.