The first installment of a serial on silk by E. A. Posselt, from Posselt's Textile Journal, October 1907. It defines true silk and its properties (lustre, strength, elasticity, scroop, weighting) and surveys world silk production and the character of China, Canton, Japan, Bengal and European raw silks. It then begins the throwing process, covering splitting and sorting, and soaking of skeins. An illustration shows the silkworm life stages, and a contents list outlines topics for later installments.