istributed over a much more invention some months ago, but did not consider it extensive heating surface, is improved in proportion. prudent, in ‘consequence of pending applications for “ All the damage to ordinary superheaters is done European patents, to publish a minute description of at the… … to 88 per cent in coal has CARVALHO’S STEAM SUPERHEATER. tion of steam, until the been effected, the vessel temperature of the retort is reduced "below the de- being thus enabled to carry one-third more cargo in- upon the top of the boiler. The coils absorb the heat composing heat. This is…
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