Reference may be made here to the necessity for attention to the type of seat provided, particularly in entirely sedentary occupations, as in the clothing trade and in many of the processes of such industries as biscuit-making, soap-manufacturing, etc. Witnesses from the clothing trade laid great stress on the fact that sitting all day on a small hard stool was extremely fatiguing for growing girls, as it gave no support to their backs, and the Welfare Worker of a large soap-works, after trying one of the stools in her own office, is having them all replaced by chairs with suitable backs in those departments where the work is mainly sedentary. _Weight-carrying and Heavy Work._--As far as one can gather from the rather scanty evidence available under this heading, girls under 16 in munition works are seldom engaged on work involving heavy lifting and carrying. The majority of young girls are feeding automatic machines and working power presses, and all materials are brought and taken away by special labourers. Many girls over 16 have been substituted for men workers, but it is exceedingly difficult to gauge the effect which such work is exerting on their health. Overlookers and Welfare supervisors declare that tall strong girls are chosen for heavy processes and that very few injuries result, while a girl can be transferred to lighter work if the heavy work is too fatiguing. One doctor related how she had just concluded the examination of 200 women and girls engaged on heavy capstan lathes and had discovered no injurious effects, but she pointed out that they were all from the Black Country, where women and girls have been doing heavy work for several generations, and their physique was undoubtedly superior to that of the average industrial girl worker. Another doctor stated that the carrying of weights over 50 lbs. is exceedingly injurious to adolescent girls, as it causes the heart to beat too quickly, so that after a time the beat is continuously rapid and anaemia sets in. This effect is seldom, if ever, noticed in girls over 20. On the other hand, uterine injuries are practically unknown in young girls and hernia is very rare. In one large works the girls who are transferred to men's work of lifting and carrying goods are selected by the gymnasium mistress and wear gymnastic costumes to facilitate their movements, and the works doctor reports that there have been no ill effects beyond a few cases of sprained ankles and wrists.