There are social microbes no less potent and mischievous than those with which Pasteur deals. Some of those who are infected with the contagion are put away in pest-houses or in prisons; many more walk the streets, and spread their dangerous infection through the social, business, and home life of the people. My claim is that the bad tenement house in Boston, as everywhere else where people are herded together in crowded filthy quarters, where sanitary laws are neglected or defied either by landlords or tenants, or both, furnishes a breeding-place for the microbes of nearly every sin and vice that infest our modern society. The editor of the Portland _Oregonian_, commenting on General Booth's scheme for the rescue of the London poor, says: "Its most hopeful features are those which propose to provide the lowly with means to help themselves, in the building and maintenance of homes. Thousands of women belonging to the 'submerged tenth' need almost as much instruction in the simple acts of housewifely thrift and neatness, as the squaws belonging to the North American Indian tribes. [Illustration: WIDOW AND TWO CHILDREN IN UNDER-GROUND TENEMENT.] "Homes, in the civilized sense of the term, they have never had to keep, and their squalid abiding-places, overrun with wretched and quarrelsome half-clad children, and bare of the commonest comforts of life, have offered very unattractive fields for womanly originality and painstaking endeavor. A cheerful, quiet home, wherein the laborer is always sure of warmth and light and wholesome food, has in it a saving grace which all the creeds in Christendom cannot compass without its auxiliary aid."