34
Hereditary Genius
shall amount to about that numbernamely, to 248 per million:
Classification Of Men According To Their Natural Gifts.
Grades of natural
Numbers of men comprised in the several grades of natural ability,
whether in respect to their general powers, or to special aptitudes.
ability, separated by
equal intervals.
In each
million
In total male population of the United Kingdom,
Below
Above
Proportionate,
of the
same
age.
viz. 15 millions, of the undermentioned ages :
Average
average
viz. one in
2030
3040
4050
5060
6070
7080
a
A
4
256791
651000
495000
391000
268000
171000
77000
b
B
6
162279
409000
312000
246000
168000
107000
48000
c
C
16
63.563
161000
123000
97000
66000
42000
19000
d
D
64
15696
39800
30300
23900
16400
10400
4700
e
E
413
2423
6100
4700
3700
2520
1600
729
f
F
4300
233
590
450
355
243
155
70
g
G
79000
14
35
27
21
15
9
4
x
X
all grades
below e
all grades
above G
1000000
1
3
2
2
2
On other side of average
500000
1268000
964000
761000
521000
332000
149000
Total, both sides
1000000
2536000
1928000
1532000
1042000
664000
298000
The proportions of men living at different ages are calculated from the proportions that are
true for England and Wales. (Census 1861, Appendix, p. 107.)
Example.The class F contains 1 in every 4,300 men. In other words, there are 233 of that
class in each million of men. The same is true of class f. In the whole United Kingdom there are
590 men of class F (and the same number of f) between the ages of 20 and 30; 450 between the
ages of 30 and 40; and so on.
It will, I trust, be clearly understood that the numbers of men in the
several classes in my table depend on no uncertain hypothesis. They are
determined by the assured law of deviations from an average. It is an
absolute fact that if we pick out of each million the one man who is
naturally the ablest, and also the one man who is the most stupid, and divide
the remaining 999,998 men into fourteen classes, the average ability in each
being separated