But with the twentieth century,[73] college-trained women themselves are coming to see that their previous neglect of those principles of science and economics which underlie household administration was unwise and unwarranted. Of that change of attitude, the new courses in home science at King's College are the firstfruits, and this book is a small contribution to a movement which is destined, perhaps, to revolutionise housekeeping, as a band of devoted women succeeded some few years since in revolutionising the profession of nursing. The main lines on which the influence of the industrial revolution on women's position has operated can be but briefly indicated in this very summary sketch. Want of space prevents me from doing more than allude to other aspects of the question, such as the employment of married women, the status of women in government offices, women's trade unions, homework and sweating, the prevention of infant mortality, the work of women in the administration of charity and in local government, together with many other developments of the one cause--the alteration between the relations of the home and of society due to the changes in our commercial and manufacturing system. I must turn now to a study of the economics of the household as it actually exists to-day. III. THE PRESENT ORGANISATION OF THE HOUSEHOLD To begin with, it is perhaps worth while to notice certain broad distinctions which differentiate the household, considered merely as an economic institution, from other agencies engaged in the production of commodities and services. One main difference is, as was noticed earlier, that the household produces use-values, and all other organisations (save some public bodies) exchange-values. Or to put the same thing in another way, the industrial world is run to make a profit; the household, on the contrary, is kept up by the contributions of its members, and exists to provide for them the necessaries and comforts of life. None the less is the work of cooking, cleaning, and serving of real economic value when carried on within the household, as people discover when they have to pay for the organisation of the same services in hotels or boarding-houses.