elimination of the personal factor, and the better analysis
(cropped from borders, and squared)
Figures 4, 5, 6 and 7 are micro-photographs of residues retained on 170 mesh sieve, 200 mesh, 280 mesh and through 280 mesh sieve, the fines. Each co-ordinate division has a length of .00833 m.m.
F. W. Walker, Jr. “A Means for the Determination of the Fineness of Raw Materials.” Transactions of the American Ceramic Society 18 (1916) : 499-507
University of California copy, digitized August 27, 2009
epigram ex p 504
recalls another means of measurement, for standardization — Nathan Augustus Cobb his projection method for tracing cotton fibers, described at 0041
not to mention Brice Marden and Agnes Martin, being an amalgam thereof.
elimination of the personal factor; fines; grid; residues; standardization
F. W. Walker; N. A. Cobb