In Erfurt, a small city of Germany, of one thousand infants born in each of the different classes, there died of the illegitimate children three hundren and fifty-two; of those of the laboring class, three hundred and five; of those in the medium station (official class largely), one hundred and seventy-three; of those in higher station, eighty-nine.

The same relation of infant mortality to poverty becomes apparent when estimated in other ways.

In Berlin, with an average infant mortality of one hundred and ninety-six per thousand, the deaths in the best districts of the city were fifty-two and in the poorer quarters four hundred and twenty.

The effect of poverty is seen particularly in the bottle-fed infants; with natural nursing the child of poverty has almost as good a chance as the child of wealth.

From reasons which are almost self-evident, the mortality in illegitimate infants is almost double that of the legitimate.