Putnam, J. Pickering (John Pickering), 1847-1917 · Boston, Ticknor and Co. · leaf 327
NO. 2. Since the first edition of this work was written, the Fire on theHearth heater has been materially improved. Figs. 232 and 233 rep-resent the apparatus as it is now used. The heater is enclosed in a metallic shell or air-chamber which insuresclose contact of the fresh air with all the… … Fig. 233 APPENDIX 193
Fireplaces
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