nstruction of this portion is peculiar. ‘It is seen plainly near the top of the figure, where the shell is shown as broken away. The water spaces are radial, interspersed with similar radial spaces for the pro- ducts of combustion, their cross-section- al area being two or three times greater than… … the pipe, F. The principal advantages claimed for this apparatus, are the rap- idity and equability of the generation of steam for cooking purposes. The heat- The shell is made in the usual way, but with somewhat ing surface, compared with the water greater depth of seat than others, the stem,…
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