144 LIME MACHINE ORIGINALLY EMPLOYED.

three separate chambers, a, a, a, destined to containthe mixture of quick-lime and water. At the underside of each chamber, is bolted a cylinder, h, h, h,the lower extremity of which is furnished with alarge flanch, extending nearly to within the wholeinner diameter of the machine.

From the bottom of each of the chambers, a , a,«,proceeds a pipe curved upwards, and communicatingwith a circular vessel, C, C, C, which serve forthe purpose of charging the chambers, a, a, a, withthe mixture of quick-lime and water, and regulatingthe level of the fluid within the chambers. Thecurved pipe likewise prevents the escape of the gaswhen the contents of the chambers a, a, a , are dis-charged.

The vessels, C, C, C, are provided with a wastepipe and stop-cock, as shown in the sketch, fordischarging the contents of one chamber into thechamber placed below it, and lastly into the reser-voir e.

b b , are pipes which convey the gas into thechambers, one extremity of each pipe communicateswith the cylinders h, h, h, and the other with thechamber below it, and the lower pipe eommuni-