to one-third of the heat passes up the chimney and is lost. Could not
some method be perfected by which this could be saved? It would be a
great boon to the poor, who need to save every pound of coal, if this
could be done. We suggest as one plan a stovepipe radiator--two pipes,
open at top and bottom, traversing the vertical leg of the smoke-flue,
by means of which the air of the room shall be taken in at one end and
sent out at the other. There are at least 100,000 apartments heated by
steam. A system which will add one-fourth to the heat of these rooms
will be a material blessing. There should be millions in the invention.