Putnam, J. Pickering (John Pickering), 1847-1917 · Boston, Ticknor and Co. · leaf 226
Fig. 185. Vertical Section of Terra-Cotta Distributor. Fig. 184. Vertical Section of Terra-Cotta Distributor. tors, the writer had a piece of terra-cotta, of the kind to be used, heatedto different degrees of heat, including red-heat. Cold water dashed uponthe sample raised to these temperatures…
Fireplaces
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