Society of Glass Technology · [Sheffield] · leaf 611
ials. 0. Kallauner, R. Barta, and J. Simane (Sprechsaal,1922, 55, 45, 58).—A comparison of the results obtained by theuse of the previously published methods of other workers. Testpieces were made of pressed clay slabs of size 8-35X4-00X 1*90 cm.,and burnt at Seger cones 010, 1, and 6,… … Fig. 139. before re-using were again weighed. At normal pressures, thetests were performed in flat porcelain dishes, whilst Fig. 139illustrates the apparatus used for work at reduced pressure.Qualitative results by Bischofs method, that is, by noting thetime taken by a water-drop of 0-5 c.c. size…
Glass
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