List of Illustrations

FIGURE	PAGE
1. Four Baby Girls at Once	6
2. The Effect of Nurture in Changing Nature	10
3. Height in Corn and Men	12
4. Why Men Grow Short or Tall	14
5. Bound Foot of a Chinese Woman	42
6. Defective Little Toe of a Prehistoric Egyptian	42
7. Effect of Lead as a "Racial Poison	63
8. Distribution of 10-Year-Old School Children	76
9. Variation in Ability	77
10. Origin of a Normal Probability Curve	78
11. The "Chance" or "Probability" Form of Distribution	79
12. Probability Curve with Increased Number of Steps	80
13. Normal Variability Curve Following Law of Chance	80
14. Cadets Arranged to Show Normal Curve of Variability	82
15. Variation in Heights of Recruits to the American Army	82
16. How Do You Clasp Your Hands?	100
17. The effect of Orthodactyly	102
18. A Family with Orthodactyly	102
19. White Blaze in the Hair	104
20. A Family of Spotted Negroes	104
21. A Human Finger-Tip	106
22. The Limits of Hereditary Control	106
23. The Distribution of Intelligence	106