The elements of educational science depend mainly upon the social conditions that obtain in the country with which we have to do; as time passes, the science undergoes a progressive alteration, and leads us from individual education to social education. The elements of the education of the future will depend upon the general configuration of social life, upon the characteristics of domestic life, and upon the regulation of parental authority. The individual household of our own time has no regard at all for the special needs of the child, and the various occupations carried on in such a household constitute a hindrance to the proper upbringing of children. The labours of the kitchen expose children to constant accidents--from fire, boiling water, sharp instruments, &c. The parents, and more especially the mother, will in times to come be much less occupied than at present in domestic drudgery, and will consequently have more time to devote to the upbringing of their children. The parents will also themselves stand at a much higher level of culture, and this cannot fail to lead to an effective demand for the more suitable upbringing of children. The modern dwelling and its furniture take no account at all of the needs of children; at every turn there are sharp corners and hard objects, by contact with which children may be, and often are, seriously injured. In former times various occupations were carried on in the individual household which hardly any one now dreams of doing at home: among these may be mentioned, spinning, weaving, laundry-work, soap-boiling, the slaughtering of animals and the preparation of their flesh, the grinding of meal, &c. &c. In the United States of America even to-day many families take all their principal meals at public restaurants; in America also, to an increasing degree, heating, ventilation, and lighting of the houses is provided from central establishments. The household of to-day is inconvenient and uneconomical. Much work is still done at home which could be done more cheaply, more effectively, and more conveniently elsewhere. As time goes on, one labour after another which is now done at home will be removed altogether from the sphere of the domestic economy, and this will necessarily lead ultimately to the disappearance of the individual household. In the future, human beings will occupy separate dwellings, but not separate households; or, to put the matter more intelligibly, most of the work now carried on in the individual household will be arranged for from centralised organisations. It is obvious that these changes will lead to extensive modifications of our present individual methods of domestic architecture.