The genesis of the relation being thus established, it is easy to account for its present peculiar and dominating condition--celibacy. The housemaid is the modern derivative from the slave-wife. She may no longer be the sub-wife of the master--but neither may she be another man's wife. No married man wishes his wife to serve another man. This household service, being esteemed as a distinctly feminine function, closely involved with maternity, or at least with marriage, or, if not with marriage, at the very least with woman's devotion, and quite inconsistent with any other marriage; therefore we find the labours of the household performed by celibate women of a lower class. Our modern household is but a variation of the primitive group--the man and his serving women still. In the period of slave labour, where both men and women were owned and exploited, we find household labour performed by men; and in those Oriental nations where slavery yet exists we find man-service common in the home. Also in nations still influenced by feudalism, where service once went with the soil, where the lord is still attended by what was originally his contingent of fighting men, but which has gradually dwindled to an array of footmen and butlers; there we find men still contented, or partially contented, to do house-service. But it ranks last and lowest in man's mind, and justly. As fast as industrial evolution progresses we find men less and less content to do this work in this way; or, for that matter, women either. In the highly advanced economic status of America we are especially confronted with this difficulty, and have to supply our needs from nations still largely under the influence of the feudal régime, or those in the yet lower period of slavery. Men-servants, when obtained, are generally satisfactory; no public outcry is made over them. It is the "servant-girl" that constitutes the element of difficulty, and it is she that we must consider. Let it be clearly held in mind that the very first economic relation was that of sex, based on the natural tendency of the female to work; sex-labour. The second stage of economic relation is that of force; slave-labour. The next is that of payment, what we call the contract system; wage-labour. Social evolution still shows us all these forms actively present in this age, though belonging to such remote and different ones; just as physical evolution still shows us monad and mollusk as well as vertebrate mammals. Each stage has its use and value. But when an early stage comes into contact with a later one there is trouble.