Two pages from the August 1916 issue of Posselt's Textile Journal, continuing a series on fabric analysis. The first article gives chemical tests to tell mercerized cotton from untreated cotton and from silk, a scheme for chemical examination of vegetable fibres, and worked examples of finding the percentages of wool, cotton and silk in union fabrics. The second page begins a continued article on silk throwing, covering the testing of raw silk and a winding-break grading standard.