Two journal pages from the November 1907 installment of E. A. Posselt's serial on testing textile fibres, yarns and fabrics. They finish the discussion of flocks, with a method for testing a fabric for flock content, then describe silk (cultivated, spun or waste, wild/tussah, and weighted) and begin cotton. Microscope illustrations show silk and cotton fibres, including loaded silk and ripe, half-ripe and unripe cotton. The serial's outline of topics is printed on the first page.