Annual report of the Regents . es of being very plastic, burning to adeep red, with a very dense body at a comparatively low tempera-ture. It took ^ of water to work it up. The air shrinkagewas 6^, and at .06, ^. Incipient vitrification began at .03,with 12^ shrinkage; complete vitrification was reached at at B. The percentage of soluble salts contained in theclay was .25^. The tensile strength showed a minimum of 75pounds and a maximum of 90 to the square inch. The clay slakesquite rapidly in composition is Silica Alumina 29. 20 Ferric oxid lime .65 Ma
Annual report of the Regents . es of being very plastic, burning to adeep red, with a very dense body at a comparatively low tempera-ture. It took ^ of water to work it up. The air shrinkagewas 6^, and at .06, ^. Incipient vitrification began at .03,with 12^ shrinkage; complete vitrification was reached at at B. The percentage of soluble salts contained in theclay was .25^. The tensile strength showed a minimum of 75pounds and a maximum of 90 to the square inch. The clay slakesquite rapidly in composition is Silica Alumina 29. 20 Ferric oxid lime .65 Magnesia .31 Alkalis Water 6. 10 Total Olens Falls. Two varieties of clay occur here in the pits of theGlens Falls terra cotta co., the upper being red, and the lowerbluish gray. The composition is indicated by the followinganalyses. ^i^if Red. gray Silica Alumina Oxid of iron Lime Magnesia Organic matter 1. 18 .... Alkalis 6. 05 •30) d ft c;o O CD ci. CD dft oo o I-H
Size: 1244px × 2008px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
