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A Sparrow, which at the first moved very vigorously under Water, being taken up, after it had lain half a Minute without Motion, was past Recovery.
A Mouse being immers'd half a Minute, and some Seconds, after some faint signs of Life, tho not Convulsive, dy'd.
A Duck, being immers'd by a Weight, after it had lain quiet for a Minute, was a little uneasie; but being quiet at the end of the se∣cond Minute, we took it out, and in a little time it recover'd; but being immers'd again in fresh Water, it emitted several Bubbles at its Beak and Nostrils; and in two Minutes time, began to struggle: At the end of four Minutes ceasing to emit Bubbles, it began to gape, which continu'd two Minutes, and then its Head hang∣ing carelesly down, it seem'd dead; being ta∣ken out a Minute after, it was past Recovery.
A Duckling being immers'd with its Beak a∣bout 2 Inches under Water, emitted Bub∣bles at its Beak, which likewise arose from some place in its Neck, about as far from its Eyes as from its Ears, after which, several times it endea∣vour'd to dive lower, and having been mode∣rately convuls'd, hung its Head down, as if dead at 3 Minutes end; soon after, a trembling Motion appeared in some parts of its Bill, but that cea∣sing, at the end of the 4th Minute, it was taken out past Recovery.
A Viper was so long kept in Vacuo, that it seem'd dead; but, being kept all night o∣ver a digestive Furnace in a Glass Body, was as lively as ever. Then we immers'd it in a Glass Body stopp'd with a Cork, and depress'd with a Weight; where it lay a considerable time, with very little Motion; when four hours were almost past, it swam above the Bottom of the Water, and had several times put out its Tongue; when a little more than seven hours were past, it seem'd dead, its Head and Tail hanging down without Motion.
N. B. Tho' several of these Animals seem to die a little sooner in Water, than in Vacuo; yet it does not certainly prove, that the former kills them faster, for in Water they are depriv'd of Air instantly; In a Receiver, by degrees; which is evident from hence, viz. That having provided a Receiver which could be exhausted at one suck, the Animal contain'd in it would be dead in half a Minute.
Animals in an exhaust∣ed Receiver