Exhibit C ii—16.5
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 I multiple birth
?> •; 2 ,, ,,
,, „ 3 or more ,,
Mortality of Twins.
Percentage of deaths before the age of 20 :
Figure C 11 (continued).
Figure C 12 the celebrated pedigree of the Hsemophilic family C 12
(bleeders) Mam pel (by Riidin after Lossen).
Figure C 13 showing the inheritance of progressive muscular C 13
atrophy (after Eichhorst).
Figure C 14 a partial reproduction of a pedigree comprising over c 14
2,000 people of the family Nongaret suffering from inherited
stationary night blindness (compiled by Cunie^r, True and
Nettleship). With regard to these figures it is to be noted that only
a fraction of the offspring is affected with the illness, the remainder
being perfectly normal. It is remarkable with the bleeders
(Hsemophilic persons) that the females do not suffer from the disease
though they transfer it to their male offspring; a similar latent
disposition is observable in other hereditary conditions, especially
colour-blindness. W. Weinberg shows in Table C 15 the frequency of tuberculosis C J5
within families. He adds : “ This is a comparison of the
experiences of married tubercular individuals, regarding the frequency
of tuberculosis among their parents, brothers and sisters, with the
corresponding experiences of their husbands or wives who come on an
average from similar surroundings. The experiences of the latter
represent the normal expectation. It is especially striking that the family
influence tells most with the children of the well-to-do.” The well-
known fact that the tuberculous frequently come from tuberculous
stock is clearly demonstrated in the figures of this table.
In Table C 16 Dr. Otto Diem shows the distribution of particular C 16
taints in every hundred of the tainted members among the nearest
relations (parents, grandparents, uncles, aunts, brothers and sisters)
