air spreads itself in a level of ventilation has undergone a thorough revolution; it has line of “water smoke” with a sufficient degree of heat to stratum throughout the top of the chamber, displacing and been found necessary, in order to produce a comparatively complete the process; but as they… … low (thoroughly satu- THE HAWLEY BRICK KILN. ject of our illustra- rating the material), tion, “The Hawley and acts as a sort of automatic damper, which resists or re- bottom of the room into the sub chamber or condensing well, Kiln.” tards the closely following or descending stratum of ignited Q,…
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