[i27;] 
th^ bottom of the fame, where it muft be we!i lod- 
dered, and reaching near to the bottom of the 
RockCC. 
PP a pipe to convey the water from the glafs G6 
into the Rock CC5 this Pipe is well foddered to the 
co^er of the fayd Rock. 
^a vaive working by a fpring at the bottom of the 
Pipe PP, to keep the water, that gets in that way, 
from returning back. 
another valve at the top of the Pipe 00, that the 
ivater, getting up that way, may not fall through the 
feme. 
Now it is plain, that the Rock Tf, being fiU'd part- 
ly with water, and partly with jiir 5 if we open the bel- 
lows M the u^tr from the Crown FF, muft run 
through the Pipe iVN", into the Tumbler J^: and 
thence through the Pipe IL L, into MM to fill the 
vacuity made therein: the Air in the Crown FF be- 
ing thus rarified, gives liberty to the Jir in the Rock 
G C to tariff too , by driving the water through the Pipe 
0 0 : t\iQ water being got up into the Crown Fp, runs 
down the Corall EE, and through the crooked Pipes 
DDD fpouts out at their upper apertures, and from 
the fliells H H, falls upon the Rock CCi if we come 
afterwards to fliutt the Bellows MM, the Air got into 
their vacuity, muft run back into the Tumblers J J, 
and prefs upon the water at the top of the Rock ff: 
but the Air in the fayd Rock , having been rarified^ 
its fpring is not iufficient to refift this prefTure, and 
fo the water is forced into the fayd Rock through 
the Pipe PP: and by thus opening and (hutting the 
Bellows MM, the water muft conftantly circulate by 
the ways aforefayd. 
As for the ufes , this way for raifng water may h% 
apply'd to, this I do conceive : the glaffes, being meer- 
ly to Conceal the fecret, muft be left out ^ and there 
X X X 3 . may 
