"The resistance dates from the first to the last periods of life. Hoffmann finds that in Germany, from 1823 to 1840, the number of still-born among the Jews was as 1 in 39, while with other races it was 1 in 40. Mayer finds that in Furth children from one to five years of age die in the proportion of 10 per cent. among the Jewish, and 14 per cent. among the Christian population. M. Neufville, dealing with the same subject, from the statistics of Frankfurt, gives even a more favorable proportion of vitality to the Jewish child population. Continuing his estimates from the ages named into riper years, the value of life is still in favor of the Jews, the average duration of the life of the Jew being forty years and nine months and that of the Christian being thirty-six years and eleven months. In the total of all ages, the half of the Jews born reach the age of fifty-three years and one month, whilst half of the Christians born only reach the age of thirty-six years. A quarter of the Jewish population born is found living beyond seventy-one years, but a quarter of the Christian population is found living beyond fifty-nine years and ten months only. The Civil State extracts of Prussia give to the Jews a mortality of 1.61 per cent.; to the whole kingdom, 2.62 per cent. To the Jews they give an annual increase of 1.73 per cent.; to the Christian, 1.36 per cent. The effective of the Jews require a period of forty-one years and a half to double themselves; those of other races, fifty-one years. In 1849, Prussia returned one death for every forty-one of the Jews and one for every thirty-two of the remaining population.