The substance of a series of Sunday Eve ning Addresses on the same general theme. The pulpit from which they were delivered still labors to save men's bodies and to prevent disease caused by ignorance and vile sanitary conditions It 'is interested in sanitation, pure food, good housing con ditions and economic justice. But it has also awakened to the recognition of the mental factor as one of the great under lying causes of human happiness and mis ery. In the preparation of these articles the author has sifted much literature and experience and passes it on in this con densed form to those who are unable to do so for themselves. He also wishes to reach that wider circle who did not hear.