134Section I.A. Marro.
Table VIII.
Intelligence of Pu-pils in Relation to the Age of the Mothers.
Age of the Mother. Good (superior). Medium. Bad (lowest).
Of 21 years ............... 43-4 (3*5%) 28-3 28-3 (3-5%)
From 22 to 36 ............... 39-8 (7*8%) 31-5 28*5 (6*i%)
From 36 or 37 and over 31-0 (4-6%) 34-4 34'4 (5*7%)
The greater intelligence would coincide most frequently with the younger
age of the mothers; nevertheless not in its most evident manifestations, of
which the higher proportion would be in favour of the second class first
and then of the third. Nevertheless, in favour of the first class, the mini
mum proportion of defective intelligences would exist which would be at
the cost of the class including the mothers of middle age, whilst the greatest
number of inferior intelligences would belong to the aged mothers.
It now remains in the last place to examine the cases in which both the
parents are found in the same conditions of immaturity, complete develop
ment and of decline.
In the different classes of criminals one had the following results :—
Table IX.Period of
s ----**"--------------- """ X.
immaturity. complete develop- decline,
ment.
Assassins ........................... 0 = 0% 10 = 55% 8 = 44%
Blows and injuries ........ 4 = 21% 11 = 57% 4 = 21%
RaPes ............................... 0 = 0% 14=73% 5 = 26%
Assaults ........................... 3 = i7% 12 = 70% 2 = 11%
Arsons ............................... ° = °% 1 = 100% ° = °%
Swindlers ...................... 2 = 4% 33 = 78% 7 = 16%
Thieves, idlers, and law
breakers ...................... 20=14% 89 = 65% 27 = 19%
Amongst the insane, there were born of parents, both aged, a decidedly
larger proportion of moral lunatics, paralytics, and hypochondriacs. Of
young couples only four melancholics were born, one hebephreniac, and
one alcoholic. Subjects of mania and melancholy were descended in great
proportion from middle-aged couples.
Amongst pupils studied as regards their conduct at school and as regards
the degree of intelligence shown, the union of father and of mother both
at the period of immaturity, of complete development, and of decline gave
place to the following proportion :—
