| Total population |  | ||
| Among daughters |  | of mothers of twins | |
| " maidens | |||
| " sisters | |||
Figure C 11.
In every 1,000 Births there are the following numbers of Twin Births among the immediate relatives:
| Of all mothers |  |
| Of women who have had 1 multiple birth | |
| " " 2 " " | |
| " " 3 or more " |
Mortality of Twins.
Percentage of deaths before the age of 20:
| Single-born Children Twins |
Figure C 11 (continued).
Figure C 12 the celebrated pedigree of the Hæmophilic family (bleeders) Mampel (by Rüdin after Lossen).