Full text: Problems in eugenics

3°Exhibit C 63—64. 
C 64Time passed 
since birth 
of preceding childless than 
1 yearall children 
1-1J ij-i£ i^-ifiJ-2 2-3 over 3 years 
Figure C 63. 
Figure C 64 shows the parallelism_j3etween the jiverage_Jength__oM)rea^- 
feeding and the average time between births within the families. A half to 
three-quarters of the mothers who suckled either long enough or very long 
show an interval between births of from to 3 years, whereas of those who 
did not suckle at all, or only did so insufficiently, only one-third belong to 
this group, and figure largely in the column of lower birth intervals. 
Dependence of Infant Mortality on the Average Duration 
of Breast-Feeding and the Average Length of Time 
Intervening between the Successive Births of the 
Children in a Family.□ Average infant mortality of 
the group in question. 
Infant mortality according 
to an average length of time 
intervening between succes­ 
sive births of 
If the preceding child was suckled for at least 39 weeks, only thirty-eight, 
and with a suckling period of more than a year only twenty mothers have 
to reckon on a fresh birth within if years. 
Dependence of Infant Mortality on the Duration of Breast- 
Feeding and the Length of Time Intervening Between 
Successive Births.D Average infant mortality of 
the group in question. 
Infant mortality arranged 
according to duration ot 
(5>233 children, after Dr. Marie Baum.) 
(1,495 families with 7,983 living-born children, 
after Dr. Marie Baum.)■^essttianlyearj-— 0 
» 1 h) IV» 
ea ft - iV 
bu te - iV-j.. 
^ 1V 2 » 
O 2 - 5 •’ 
!■ over 5 •• 
Duration of 
breast-feeding in weeks39-52 over 52 all children together 
Figure C 64.

Note to user

Dear user,

In response to current developments in the web technology used by the Goobi viewer, the software no longer supports your browser.

Please use one of the following browsers to display this page correctly.

Thank you.