bad 1 T4 Y30 dy be g^ 
a ya &Y ipnods 220 gt je oe xd nt 4 
4 new-confiručted vr my. $23 
means of a pipe and cock, by the turning of which, the ma- 
is done in- Pis Mic s There innii laid 
over.the valves, extending from one barrel to the other, which 
hasa duct through it, Sted with a fmall pipe ftanding bes 
tweemthe-barrels:: through this pipe the.air paffes into'a duct 
in the bottom- piece. — “a saunia In this piece is like- 
wife the di didi EMG SA age me adl M. 
this cock. alfo alfo. is. connectec 
The key is pierced. with two holes in fuch a manner, that one 
of them will conne& the pipe coming from the receiver with 
the du@in the bottom-piece: leading to the ciftern, or with 
the other leading to the valves, as may be required: fomexhquil+ 
i sd aig ui Lheo other hole through:tlie key willopen, 
the cock, » So that having the direction of the air which paffes 
through: th the. valves aE T E Vu of Uo. Y LU AM pum 
may exhauft or condenfe at pleafure : Mop wid: the de^ "tdi: 
. nets the; pipe «from. the. receiver, and the du& leading to. the 
cifterns, together, the pump will exhauft ; and when it — 
oe - 
air. ir.entérs, vong Darei destin ecd iei yon. out ibm 
valves, and through tesis cock is into theeta “In this 
part of. the; machine wo E m is MARG BE S i - 
Destin 1 «quem pm s — Ser i ge the sie ses 
perfe&ly. se EEN nina ti meee 
We. have feea that. Me. Birtek. i makirig: the pires 
ha mopsie meti ipcihe bonon of the bartel, pond 
