This exclusive pre-occupation with the improvement of the environment has been termed Euthenics by Mrs. Ellen H. Richards, who has written a book with this title, advocating euthenics in opposition to eugenics.

Not one of the four stages of social reform already summarized can be neglected. On the contrary, they all need to be still further consolidated in a completely national organization of health. I may perhaps refer to the little book on The Nationalization of Health, in which, many years ago, I foreshadowed this movement, as well as to the recent work of Professor Benjamin Moore on the same subject. The gigantic efforts of Germany, and later of England, to establish National Insurance systems, bear noble witness to the ardour with which these two countries, at all events, are moving towards the desired goal.