General Survey -- I. Number of children and profession -- II. Number of children and religion -- III. Number of children, profession and religion -- IV. Number of children, profession and year of marriage -- V. Number of children, religion and year of marriage -- VI. Number of children, year of marriage and duration of marriage -- VII. Number of children and age at marriage -- VIII. Number of surviving children, year of marriage and duration of marriage -- IX. Small families and the system of substitution -- X. The childrenโ{128}{153}s religion compared with the parentsโ{128}{153} religion in mixed marriages -- XI. Interval between date of marriage and date of the first childโ{128}{153}s birth, in connection with profession, religion and year of marriage -- If Chapter XII. Conclusion -- Tables (Absolute numbers) -- I. Families according to professional group and number of children -- II. Families according to religion and number of children -- III. Families according to professional group, religion and number of children -- IV. Families according to professional group, period of year of marriage and number of children -- V. Families according to religion, period of year of marriage and number of children -- VI. Families according to duration of marriage, period of year of marriage and number of children -- VII. Families according to age at marriage and number of children -- VIII. Families (I) according to duration of marriage (contracted after January 1, 1918), period of year of marriage and number of children alive -- IX. Families (II) according to duration of marriage (contracted before January 1, 1915), period of year of marriage and number of children alive -- X. Families according to birth interval and a childโ{128}{153}s death -- XI. Mixed marriages according to period of year of marriage, number of children and childrenโ{128}{153}s religion -- XII. Families according to professional group, religion, period of year of marriage and interval between date of marriage and date of 1st. childโ{128}{153}s birth