Putnam, J. Pickering (John Pickering), 1847-1917 · Boston, Ticknor and Co. · leaf 190
passed through the metal at any time; that they cannot after three months trial, working night and day, get thesmallest particle of gas through the iron ; that one has never known sucha thing as these gases passing through either cast or plate iron when usedfor heating purposes, etc. Fig. 139… … £ (r.l.....r;p,munv:J
Fireplaces
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