Excerpt from Studies in Glazes, Vol. 1 Two systematic studies of raw lead glazes, published in the Transactions of the American Ceramic Society, have done much to indicate the limits of variation in their composition and heat treatment. Accounts of similar studies of fritted glazes could not be found by the writers, after a search in the literature of ceramics. This want of definite information is certainly not because fritted glazes are unimportant or little used, for, on the contrary, they form the basis of decoration for the most costly wares, and arc to the white-ware manufacturer the glaze par excellence in the making of non-crazing china. This dearth of information regarding fritted glazes is no doubt due largely to their complexity in composition and the consequent difficulties in making the necessary calculations. When there arc but two variables as in the case of raw lead glazes, only the simplest calculations arc required to formulate series in which one or both numbers vary in some predetermined ratio, but when three variable factors are to be considered, as in the case of fritted glazes, the planning of a like series presents serious difficulties. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.