Some explanation of the conflict of evidence recorded under this section of the inquiry may be found in the outlook of the witnesses interviewed. Where increased output and commercial profit were the chief concern, so long as few actual breakdowns occurred the witness would report no unfavourable results from long hours of labour, while those whose main interest lay with the well-being of the worker would notice any falling off in health with long hours and would report accordingly. It is obvious that no definite conclusions as to the immediate or ultimate effect of long hours can be made from evidence of this nature. In the second part of this report suggestions will be made as to the lines on which more scientific inquiry should be conducted in order to determine the exact effects of varying hours of industrial work on the physical organisation of adolescent girls. _Protracted Standing and Opportunity for Rest._--Evidence as to the provision of seats in munition factories is, on the whole, very encouraging. Most workshops have stools or seats for use during the short pauses which occur whilst waiting for materials or for the setting of tools, and where possible younger girls are put on work that can be done sitting down, whilst Welfare supervisors are generally ready to recommend that delicate girls be transferred from work which involves protracted standing to processes which allow occasional or even continued sitting-down, and foremen are nearly always willing to fall in with the Welfare Workers' suggestions. Only in a few cases have there been difficulties in securing seats: where men have been formerly employed the foremen are sometimes prejudiced against allowing girls to sit down, but they are soon convinced of the wisdom of making this concession. With certain processes prolonged standing is inevitable, but evidence as to resulting injury was not forthcoming in Birmingham or Coventry. None of the doctors interviewed was able to make any statement regarding the effects of a continued standing posture, as no cases of injury that could be attributed to this cause had come to their notice. Some of the Welfare supervisors stated that girls got very tired at first but soon got used to the permanent standing, and that no serious or lasting injuries resulted, though in a few cases girls not used to industrial work would get flat-footed or would suffer from swollen feet. While varicose veins are rare in young girls, every witness brought into contact with older married women was impressed by the apparent inevitability of this trouble in later years, but it is impossible to gather how far work during adolescence is responsible. Evidence as to the effects of standing on the menstrual function will be discussed later.