Full text: Problems in eugenics

40Exhibit C 97—100 
C 98 
C 99 
C 100creation period from the 25th July to the 23rd September) and two peaks 
rising above the “total” curve One of these is slight, yet distinct. It 
refers to the months of birth, July and August, corresponding with the 
procreation period from the 24th September to the 24th November. More 
conspicuous is the second peak of the curve for the feeble-minded from 
October to December, otherwise a time poor in births. The centre of the 
corresponding period of procreation (25th December to 26th March) is in 
February (carnival). This seems to confirm the suspicion that during the 
wine harvest and carnival an increased procreation of feeble-minded occurs 
(procreation during drunkenness?). 
We cannot suppress the remark that the fluctuations of the 
curve for the feeble-minded are much too small to admit of the 
drawing of an getiological conclusion, but the fluctuations of the 
intelligence curve and the illegitimate curve partly exceed the limits 
of probable error. The peaks of both birth curves in February, 
correspond to a peak in the procreation curve in May. Perhaps 
one may attribute them to the existence of a remnant of a period of 
“ heat ” (or a rutting season) in man. 
Lead. Whereas the germ cells are well protected against many 
harmful influences from without which affect the soma of the mother, 
they and the foetus produced from them suffer considerably from 
some. Amongst their deadliest enemies are certain poisons, and 
notorious in this respect is lead. Table C 98 gives two sets of 
statistics on this point, they justify the law in Germany, and in 
other States, forbidding female labour to deal with lead and lead- 
containing materials. Paul’s figures, showing that lead poisoning 
of the father is also extremely adverse to the production of a healthy 
progeny, are remarkable. 
Female Labour. A baneful influence on reproduction is brought 
to bear by the growing quantity of professional female labour away 
from home and by the economic emancipation of women. Evidence 
of this is given in Table C 99—“female labour and child 
mortality ”—the data of which are taken from Prinzing’s work, 
Infant mortality is higher the larger the percentage of females 
employed in factories during the childbearing period. This is 
partly due to interference with breast-feeding and partly to the 
unfavourable influence on pregnancy. 
Dr. Agnes Bluhm has given in Figure C 100 “Female Labour 
and Reproductive Activity,” the statistics of Roger and Thiraux, as 
well as the results of the investigation of the Imperial Statistical 
Office on the “Relationship of illness and deaths in the Local 
Invalidity Fund for Leipzig and surroundings.” Dr. Bluhm gives 
ihe following explanation: “The top figure on the left is based on 
material of the Local Invalidity Fund for Leipzic and surroundings,

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