Society of Glass Technology · [Sheffield] · leaf 261
o. 4.—There is a general resemblance in composi-tion between this clay and No. 6 (Wortley). Like No. 6, and alsolike No. 13, it works smoothly and is very plastic. At 1400° ithas become grey with some speckling, and shows a tendency tosoften. Whilst the similarity of chemical composition to No. 6… … 200 400 600 800 1000Temperature.Fig. 11. 1200 1400 1600 35 30 25 20 15 10 Mo. 12- HALIFAX. No2 —I—h —*r Tfo~-G—^ <K 200 400 600 800 1000 Temperature. Fig. 12.184 1200 1400 1600 35 1 l i i i No 13. Halifax Nq3. 30 25 < \\ h 20 \\ o 15 10 >—1) -o- —< >—( >—— -o— t> 200 400 600…
Glass
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