Under "A" there is small defence to be made. The employment of married women is fruitful of evil, and the proportion of these in Massachusetts is 23.8 per cent. Wherever this per cent is high, infant mortality is very great, being 23.5 per cent for Massachusetts and 19 per cent for Connecticut and New Hampshire. The "Labor Bureau Reports" for New Jersey treat the subject in detail, and are strongly opposed to the employment of mothers of young children outside the home; and the conclusion is the same at other points. In the matter of general injury to health, under "B," it is stated that many factories are far better ventilated and lighted than the homes of the operatives. Ignorant employees cannot be impressed with the need of care on these points, and the air in their homes is foul and productive of disease. A cotton-mill is often better ventilated than a court-room or a lecture-room. A well-built factory allows not less than six hundred cubic feet of air space to a person, thirty to sixty cubic feet a minute being required. Ranke, in his "Elements of Physiology," makes it thirty-five a minute. The homes of operatives have steadily improved in character; and wherever there is an intelligent class of operatives, regulations are obeyed, and sanitary conditions are fair and often perfect, while the tendency is toward more and more care in every respect. Operatives' homes are often better guarded against sanitary evils than those of farmers or the ordinary laborer. Under "C" it is shown conclusively that the factory has diminished intemperance,--Reybaud's "History of the Factory Movement" giving full statistics on this point, as well as in regard to the growth of banks and benefit societies. The standard of living is higher here, but there are countless evidences of thrift and a general rise in condition. In the matter of prostitution, under "D," it is shown that but eight per cent of this class come from the factory, twenty-nine per cent being from domestic service. In Lynn, Mass., a town chosen for illustration because of the large percentage of factory operatives, it was found that but seven per cent of those arrested were from this class; and this is true of all points where the foreign-born element is not largely in the majority.