Normal Classes, Comparison with, of Booth's Classification of "All London," O. 3 Woman, with two Tuberculous husbands, E. 5 (_d_)
Nose, Racial form of, and its Segregative Inheritance, K. 1-2 (_a_ & _b_)
Number of Children and Capacity for Breast-feeding, C. 61 Child Mortality, C. 60
Numerical position in family, _see also_ First-born and Duration of Breast-feeding in relation to Infant Mortality, C. 20 in relation to Infantile Mortality, C. 50, 55 in Princely families, C. 53
Nystagmus, Hereditary congenital, L. 3 (_a_ & _b_)
Occupation in relation to Fertility, Denmark and Holland, C. 122
Offspring, Human, effects on of Alcohol, Blood relationship of Parents, Epileptic and Feeble-minded Parentage, &c., _see_ those heads
Parental Age at Death, and Child Mortality, C. 7-10
Occupation in relation to Military Fitness, Germany, C. 26-30
Parents, Blood-relationship of, and Health of Offspring, C. 108 Epileptic, Offspring of, D. 1
Paris, Birth- and Death-rates of, relation between, H. 4 Number of Children in, in relation to Wealth, C. 119
Paternal Alcoholism, as affecting Suckling powers of Daughters, C. 93 with Inter-connection of Tuberculosis, Neuroses and Psychoses of Offspring, C. 94 Lead-poisoning, effect of, on Reproduction of Healthy Offspring, C. 98
Pathological Interbreeding, harm of C. 109
Pauper and Defective families, Tendency to Inter-marriage between, E. 2
Pauperism due to Transmission of Defect, and perpetuation of Low-type Stocks, E. 1-6 (_d_) Tuberculosis, and Infant Mortality, relation between, E. 5 (_a-e_)
Peas, _see also_ Sweet Peas Mendelian Inheritance in, Theoretical examples of, O. 1 (_a_ & _b_)
Peasant and Tramp Intermarriages, Pedigree shewing results, C. 21
Pedigrees of Archduchess Maria ... of Tuscany, shewing Inbreeding, C. 112 "Belvidere," C. 100 Collected by Field-workers in America, P. Descent of Administrative Ability, I. 1, _see also_ Darwin, Galton, and Wedgwood families of Scientific Ability (Wollaston Pedigree), I. 2 Mendelian descent of Eye-colour in Mankind, I. 3 Family with peculiarly Curled Hair, C. 5 Hæmophylic family, C. 12 Illustrating Royal tendency to Inter-marry, C. 112-14 Reigning Houses, shewing Ancestral Loss, C. 116 Zero von Jorger family, C. 21