with some attempts towards the rendering at reason
thereof, 301, &c. The Difficulty of so doing fnr­
ther shewn from the consideration of the various
changes of Air which doe not immediatly fall un­
der our senses, 315. this last proposition prou'd
by severall observations. 316.

The 38. Experiment, touching the freezing of
water, 319. &c. Aproblem, (concerning the great
force wherewith a freezing Liquor extends its selfe,)
propos'd upon the Consideration of divers admirable
effects wrought thereby. 320 &c.

The 39. Experiment, containing an inquisition
after the temperature of the substance that remain'd
in the cavity of the Receiver, after the Air was well
exhausted. The relation of a Phænomenon, seeming
to proceed from the swelling of the Glass. With an
advertisement concerning the pliableness of Glass in
small peices. 322. &c.

The 40. Experiment, touching the difficulty that
occur'd in making tryall whether rarified Air
were able to sustaine flying insects. 326. &c

The 41. Experiment, Exhibiting severall try­
alls touching the respiration of divers sorts of ani­
malls included in the Receiver, 328, &c. With a
digression containing some doubts touching respira­
tion wherein are delivered severall Experiments re­
lating thereunto. 335 &c.

The 42. Experiment, touching the differing o­
peration of corrosive Liquors in the emptied Receiver
and in the open Air. 384

The 43. Experiment, touching the spontaneous E­
bullition of warm Liquors in the exhausted Receiver. 388

The Conclusion. 394