Society of Glass Technology · [Sheffield] · leaf 429
No. 11. X 35 diameters. No. 12. x 35 diameters. THE DEVELOPMENT OF VARIOUS TYPES OP GLASS. PART IX. 347 Table IV. Order of Melt Melting 1 lowing Set. Secti an. No. Devitrification. Result. result. down. I. a 186,4 No devitrification Clear and bright Melted 6 Si02 = 187A ,, Slight skin J? 8 70% b…
Glass
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