§ 9. But though the minimum wage of women and children is, strictly speaking, not to be measured by any ascertainable standard of subsistence, so far as the factory work of adult women is concerned 10s. may be said to be a standard wage. Factory wages, excepting for cotton-weavers, seldom vary widely from this sum. Differences of difficulty, disagreeability, or skill have little power to raise wages much above 10s., or to depress them much below. Moreover, fluctuations of trade and prices have very little effect upon this wage. Though women are largely employed in industries where improvements in machinery and methods have immensely increased the productivity of labour, their wages are very little higher than they were half a century ago. Since this rate prevails in many industries where an adequate supply of women's labour cannot be drawn from married or "assisted" women, and where the wage must be sufficient to tempt women who have to keep themselves, 10s. may be said to be the "bare subsistence" wage for women. The wide prevalence of this wage and its independence of conditions of locality, time, nature of work, have made it generally recognised as a "customary wage," and for any casual work, or any new employment requiring ordinary feminine skill or exertion, 10s. is regarded as sufficient remuneration for a woman. The basis of this custom is the knowledge that women can always be induced to work for a bare subsistence measured at 10s. or thereabouts, or for extra comforts procurable by this sum regarded as a subsidiary income.[258] It appears that the wages of bare subsistence and the wages of extra comforts have a certain tendency to equality in some of the low-paid factory trades of London, though accompanied by a difference in the quality and intensity of the labour involved. The following diagram exhibits the uniformity of factory wages in East End women's industries:-- [Illustration] Upon this table Miss Collet bases the following opinion:--"The most striking feature is the uniformity of maximum wages and the difference in the skill required, and I believe it to be the fact that the match girls and the jam girls, who are at the bottom of the social scale, do not have to work so hard for their money as, for example, the capmakers and bookbinders, who, in the majority of cases, belong to a much higher social grade. And whereas the bookfolder or booksewer who earns 11s. a week exercises greater skill, and gives a closer attention to her work, than the jam or match girl who earns the same amount, that sum which would be almost riches to the dock-labourer's daughter represents grinding poverty to the daughter of the clerk or bookbinder, with a much higher standard of decency, if she is by any chance obliged to depend on herself. How is it that this uniformity prevails, and that efficiency brings with it nothing but the privilege of working harder for the same money?"[259]