Boyle, Robert New experiments physico-mechanicall, touching the spring of the air and its effects 1660

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330
was kill'd with violent Convulsions,
within five Minutes from the beginning
of the Pumping.

Experi­
ment 41.

A while after we put in a Mouse, new­
ly taken, in such a Trap as had rather af­
frighted then hurt him; vvhil'st he vvas
leaping up very high in the Receiver, vve
fasten'd the Cover to it, expecting that
an Animal used to live in narrow holes
vvith very little fresh Air, vvould endure
the vvant of it better then the lately men­
tion'd Birds: But though, for a vvhile af­
ter the Pump vvas set avvork, he conti­
nued leaping up as before; yet 'tvvas not
long ere he began to appear sick and gid­
dy, and to stagger, after vvhich he fell
dovvn as dead, but vvithout such violent
Convulsions as the Birds died vvith.
Whereupon, hastily turning the Key, we
let in some fresh Air upon him, by vvhich
he recovered, after a vvhile, his senses and
his feet, but seem'd to continue vveak and
sick: But at length, grovving able to
skip as formerly, the Pump vvas plyed
again for eight minutes, about the mid­
dle of vvhich space, if not before, a very
little Air by a mischance got in at the
Stop-cock; and about tvvo minutes after
that, the Mouse divers times leap'd up