14(» LIME MACHINE ORIGINALLY EMPLOYED.

with the purifying mixture and passes throughthe fluid to the top of the same chamber, andthence through the pipe b, into the cylinder aboveit which communicates with the lower chamber,where it is acted on again by the lime and water,and bubbles up through the fluid to the top of thechamber. From this compartment the gas passesinto the third cylinder, where it bubbles up andpasses through the lime and water ; and lastly itmakes its exit through the pipe K, into ihe gas-holder or vessel destined to receive it.

When the mixture of quick-lime and w ater in thecompartments a, a, a, of the machine, requires to be

renewed, it is let off by the stop-cock at the bottom

\

of the lowermost vessel into the reservoir e. Thefluid contained in the upper chamber may bedischarged into the chamber below it, and so onwith the chambers below it, care being taken toclose the stop-cock of the lower vessel. The ma-chine may be recharged at the uppermost chamberwith the purifying mixture. Fig. 5, exhibits theplan of the machine, b, 6, b, the tubes connectingthe chambers. B, the flanch of the cylinder h.

This machine has in part remedied the incon-