Relation of Number of Births to Infant Mortality.
26,429 births to 5,236 marriages of members of Saxon coalminers' funds. (Some still-born infants, and children of marriages to which there were only one or two births, are not included).
Died before reaching the age of 0.09 of a year, _i.e._, a little more than a month.
[Note: under the first graph in figure] The mortality of the 1st, 2nd, 3rd and 4th child is below the average. Greatest vitality shown by 2nd and 3rd child.
[Note: under the second graph in figure] The mortality of the 2nd, 3rd, 4th and 5th child is below the average. Greatest vitality shown by 2nd, 3rd, and 4th child.
Influence of the Number of Births and the Age of the Parents at the Time of Marriage on Infant Mortality.
(From Riffel's Tables, after v. d. Velden).
Percentage of Children Born. 1-3 4-6 7-9 Children =================================== ==== ==== ==== { Children of all 28.8 30.5 38.5 { parents. { { Husband over 28 or Died before { wife over 25 years 38.5 41.6 53.4 reaching { old. 6th year. { { Husband over 28 and { wife over 25 years 41.5 51.7 64.7 { old.
Influence of the Number of Children Born to a Family on Infant Mortality.
3-5 6-8 9-11 12-15 Children ==== ==== ==== ===== Percentage of children born Died before reaching 5th year 25.5 27.7 22.7 44.3
+Number of conceptions and conception losses+, by Dr. Agnes Bluhm; the exhibitor gives the following explanation--
Hamburger's material deals with 1,042 marriages of the labouring classes in Berlin, with a total of 7,261 conceptions (an average of 6.97 conceptions for each woman); the material of Bluhm comprises 856 marriages of the wealthier and educated German middle and higher classes with a total of 3,856 conceptions (averaging 4.50 conceptions to each woman). Hamburger has counted as conception losses only miscarriages, premature births, stillbirths, or deaths from illness before the completion of the sixteenth year. Bluhm has included all those up to the twentieth year. Both have only included marriages which have been contracted at least twenty years back. As the births in these marriages apparently date back to twenty years, all living children are reckoned as survivors or conception results, even if they have not attained the sixteenth or twentieth year respectively. This has influenced the result optimistically, but as it has done so with both authors alike, the comparison of their results is admissible.