368 Recent Studies q/ the Inheritance Factor in Insanity 
All Admissions | | 
Insane Children 
of Insane Parents 
45- 55- 65- 
Age at Onset of Insanity. 
Fig. 4. 
All Admissions | | 
Insane Parents of 
Insane Children 
Age at Onset of Insanity. 
Fia-. 5. 
Diagram to illustrate the Distribution of Age at Onset of Insanity among: 
(1) The Insane Ofispring of Insane Parents. 
(2) The Insane Parents of Insane Ofispring. 
(3) All Admissions to L.C.C. Asylums. 
TABLE V. Percentage Comparison of the Age at time of Onset of Insanity in 
the Insane Offspi^ing of Insane Parents and the General Admissions to 
the London County Asylums. 
Age at 
Male 
Female 
Total 
Onset of 
4482 direct 
274 insane 
5097 direct 
389 insane 
9579 direct 
663 insane 
Insanity 
admissions 
offspring of 
admissions 
oiispiing of 
admissions 
offspring of 
during last 
insane 
during last 
insane 
during last 
insane 
four years 
parents 
four years 
parents 
four years 
parents 
Under ^'5 
20-0 
43-8 
20-2 
44-2 
20-1 
44-0 
25—34 
19-9 
27-7 
19-9 
28-0 
19-9 
27-9 
35 -U 
21-9 
13-8 
21-5 
16-7 
21-7 
15-5 
45—54 
17-7 
10-2 
18-6 
7-4 
18-2 
8-5 
55—64 
13-3 
3-6 
12-4 
2-8 
12-7 
3-2 
65—74 
5-7 
0-7 
5-9 
0-8 
5-8 
0-7 
75 
1-5 
1-6 
1-5 
41 male imbeciles out of 274 offspring 
54 female „ „ 389 „ 
95 male and female „ „ 663 
