This latter is
screwed into the piece, L, and contains numerous apertures, through
which the gas coming in from the pipe, R, passes to reach the upper
flask, G. The gas is washed by bubbling up through water that has been
introduced through the cock, R. After it has traversed both flasks, it
escapes through the copper pipe, p, into which it is sucked by the
pump, P.
_The Pump_ (Figs 1, 5 and 6)--This consists of a cylindrical chamber, P,
of bronze, bolted to a bracket on the frame, and cast in a piece, with
the suction valve chamber, P, in which the valve, p, plays. It is
surmounted by the distributing valve chamber P squared. This latter is held
by means of two nuts screwed on to the extremity of the rods, p cubed,
connected with the shell, E, of the distributing-cock, E. In the shell,
E, terminates, on one side, the pipe, p, through which enters the gas
from the washer, and, on the other, the pipe i, that communicates with
a feed-reservoir not shown in the cuts. The cock E, permits of the
simultaneous regulation of the entrance of the gas and water. Its
position is shown by an index e, passing over a graduated dial, _e?_.
From the distributing valve chamber, P squared the pipe, s, leads the
mixture of water and gas under pressure into
_The Saturator_, S (Figs 1, 7 and 9)--This consists of a large copper
vessel, s, affixed to the top of the frame through the intermedium of
a bronze collar h, and a self closing bottom H.
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