Analyzing all the grades, we find that the higher grades for virtues possess a higher average of mental capacity and that this is almost perfect for both the male and female groups taken separately. An average of the two makes a curve that leaves practically nothing to be desired. There is every reason to believe that if the total were great enough the correlation would be perfect.
Females.
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Correlation averages. | 5.28 | 5.00 | 5.66 | 5.79 | 5.20 | 5.64 | 5.96 | 6.35 | 6.88 | 7.33 |
Males.
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Correlation averages. | 2.56 | 3.68 | 5.14 | 5.24 | 5.30 | 5.73 | 5.79 | 6.57 | 6.44 | 7.33 |
Both Sexes. (Averaged.)
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Correlation averages. | 3.92 | 4.34 | 5.40 | 5.51 | 5.25 | 5.69 | 5.88 | 6.46 | 6.66 | 7.33 |
The average number of children who reached adult (21) years born to each grade is seen below to give figures representing a less smooth curve. This is probably due to an insufficiency in the total number, though I feel that this can not be dogmatically asserted.
Females.
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Av. No. of adult children. | 1.43 | 2.13 | 2.50 | 2.44 | 3.07 | 3.64 | 3.08 | 2.41 | 4.13 | 3.50 |
Males.
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Av. No. of adult children. | 1.88 | 3.58 | 3.44 | 2.41 | 3.58 | 3.46 | 3.04 | 3.72 | 4.48 | 4.09 |
Both Sexes. (Averaged.)
| Grades. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Av. No. of adult children. | 1.66 | 2.86 | 2.97 | 2.43 | 3.33 | 3.55 | 3.06 | 3.07 | 4.31 | 3.80 |
Such figures drawn from royalty, in regard to the fertility of different grades, can have, of course, but a slight bearing on the question of race suicide agitated at the present time. They do, however, show that, unhampered by restraint, as is fair to suppose has been the case
