CM) 
2. Shewethjthat much included Air rais'd Mercury in an open 
Tube no higher, than the weight of the Atmoffhere may in a 
Barofcope: where notice is taken of the great force of the Spring 
of the Air then when it could not raife the Mercury any higher. 
3. £heweth,that ye Spring of the included Air will raife Mtr- 
cury to almoft equal heights in very unequal Tubes where the 
reafon is added^why this and the former Experiment were not tri- 
ed in Water as alio an Account of an adventitious Spring, that 
Ww^sfuper- added to the Air by Heat. 
4. About a New Hydraulo-pneumatical Fountain, made by 
the Spring of un-comprefled Air-, together with the ufes to be 
made of it, as in Hydraulo-pneumaticks, or to fliew, by what 
degrees the Air reftores its felf to its Spring* or efpecially to 
find, what kind of Line the Salient water defcribesin rarify'd Air. 
5. About a way of fpeedily . breaking fiat Gkflesby the 
weight of the Atmofyhtre,, 
6. Shewefh, that the breaking of Glafs-plates in the fore- 
going experiment need not to be imputed to the FugaVacttt. 
7. About a convenient way of breaking blown Bladders by 
the Spring of the Air included in them : and of the ufefulnefs 
of this Experiment in other tryals. 
8; About the lifting up a conliderable weight by the bare 
Spring of a little Air included in a Bladder. Which as 'tis a fur- 
prifing experiment^ fo itfeems not unferviceable for the explain- 
ing of the motion of the Mufcles. 
9. About the breaking of Hermetically feal'd Bubbles of 
Clafs by the bare Spring of their own Air $ with an obferva- 
tion, that they broke not prefently 3 and what the reafon might 
be of the flownefs of that eflfedl. 
10. Contains two or three trials of the force in the Spring of 
our AiruncomprefsU, upon ftable and even folid Bodies^ where* 
wo 'tis external. 
it. Shews, that Mercury will in Tubes berais'd by* Suction 
no higher than the weight of the Atmofphere is able to impell 
it up : where the Principle of a Fuga ffccm\ and that of a Fn* 
niculus arefliewn tobeinfufficient. 
12. About the different heights v whereto Liquors will be 
rais'd by Su&ion, according to their feveral fpecifick Gravities^ 
accompanied witharemark 3 that the proportion of the weight of 
Mercury to ff^r is not quite as 14 x0 i> j-.as-alfoj that the na- 
tion' 
