Pneumatic s.

with a Weight, will, upon Exhaustion,°°n rise by the Expansion of the contained

Air.

J^sed ; f or w h; c h Reason they are generally made ofjj 0 ? . (2.) If Glass be used for a Condenser, it will

bm- * n ^ ee d suiter so great a Degree of Condensation,Experiment will be pleasanter, by viewing theof placed in the condensed Air. (3.) The SpringQ- ^ Air will be greater in Proportion to its Conden-se ° n ’. an< ^ therefore (4.) The Sound of the Bell willtljg ^' ce or thrice as loud as in the common Air, ifIs ) mac ^ e twice or thrice as dense by Injection.

c 0 '< A round V ial will be broke by condensed Air, that(6 ) bs broke by the Pressure of the common Air.sal * kough Animals soon die by not having the natu-Itjjj^uisite Quantity of Air, yet they will not be easilyt; 0 by haying that Quantity increased by Condensa-j t (7.) If Air be condensed upon Water in a Bottle,iii^j cause it to spout through the Tube of Commu-o n j atl °n to a very great Height, viz. to 30 Feet, if«n/ s ° ne Atmosphere be injected ; to 60 Feet, if two ;of 0 on. (8.) A Bladder, that will sustain the Spring(le n ^ 0nimon Air, will be broke by the Spring of con-O ■^‘ r - El short, the Force of condensed Airst/ be io far increased, as to countervail or antagonise(9 \ |s eate st Power of Nature that we can apply.

atCr with Air condensed upon it will conceive aHef heater Degree of Heat than in the common Air,(l 0 ? st will boil much sooner than in condensed Air.W at great may the Degree of Heat acquired in

ft,

e re ^ r Eds Way be, as to melt soft Solder; andMth ? re Vessels should have their Parts put togetherrc ^ Solder, that are used about these Experi-

th!s

... vast Power of confined and elastice £l s r^ 3111 st ' s that we account for the prodigious

fe( iuc' S ^ spin’s Digester in dissolving Bones andftd f* n S them to a Jelly, so as to become a wholsomea rt iet-m Ut V E)iet ; for which Purpose they are put intonjq e Wssel, with a Coyer, which is fast and

strongly

I? t