Society of Glass Technology · [Sheffield] · leaf 223
Plate 7. … Plate 8. THE CASTING OF POTS FOR USE IN EXPERIMENTAL WORK. 149 devised by Mr. E. A. Coad-Pryor. The green pots were thoroughlyair-dried, then broken into fragments, which were heated up slowlyto about 500°, when they were transferred to the ordinary blow-pipe and taken up rapidly to a temperature…
Glass
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