A short 1929 article by W. Mayr describing a pneumatic automatic feeder for willows and cards (opening and carding machinery) in textile preparation, patented by Heinrich Glass of Lambrecht, Germany. It explains how a fan and suction funnel draw raw material onto a moving lattice, with delivery rollers and a fluted roller giving an even, adjustable feed, and notes advantages over spiked-lattice feeders. Two figures show the apparatus in section and elevation, and a closing note covers oiling wool with an automatic spraying device.

Concluding installment of an illustrated overview of silk culture and silk processing, written for a lantern-slide series (Bilder 25-36). It covers silk reeling, the types of silk (raw, organzine, tram, tussah, schappe/floret, bourette), conditioning, degumming, weighting and throwing. It also describes Japanese silk weaving mills, handweaving workshops at Kiryu and in the countryside, and silk embroidery in Kyoto. The scan also includes the end of an unrelated article on cop formation and faults on the self-acting mule.