The greater infant mortality in poverty is due to the more numerous children preventing individual care, the separation of the mother from the nursing child in consequence of the demand made upon her earning capacity, and the decline in breast nursing.

Wealth is on the whole more advantageous from the narrow point of view of disease than is poverty, but if we regard its influence on the race its advantages are not so evident.

Nothing can be worse for a race than that it should die out, and wealthy families have never reproduced themselves.
Conditions always tending to destruction are a necessary part of the environment of poverty; wealth voluntarily creates these conditions, and chiefly by the pernicious influence of its amusements on the young.
A new and in many respects a nobler conception of medicine has been developed.

Formerly medical practice was almost exclusively a personal service to the sick individual, and measures looking toward the general relief of disease and its prevention received scanty consideration.

The idea of a wider service to the city, to the state, to the nation, to humanity rather than the personal service to the individual, is becoming dominant in medicine.