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 Physical condition of Childless and Fertile Couples contrasted, C. 45 Photographs of Charles Darwin, B. 3, 5, of Small Study in which "Origin of Species" was written, B. 6 Physical Development in relation to Duration of Breast-feeding, C. 7 Qualities, Heredity of, Tables shewing, C. 7 Phthisis Mortality, Decline in, for England & Wales, F. 2 (_a_) England & Ireland, F. 2 (_b_) Liverpool, F. 2 (_d_) Scotland, F. 2 (_c_) Polygamous Utah Family, Inheritance in, of Physical and Mental Qualities and Defects, and of Literary Ability, N. 1 Population Births, _per_ Couple, essential to prevent Decay of Nation, C. 123 _et proevi_ Descent of Qualities in (after Galton), O. 4 Malthusian theory of, H. 1-30 Neomalthusian theory of, C. 118-29 Portraits of Darwin, Charles (Engraving by L. Flameng, after Hon. John Collier's painting), B. 4 by Maull & Polyblank (Photograph), B. 3 on his horse Tommy (Photograph), B. 5 Painting by W. W. Ouless, B. 1 Darwin, Dr. Erasmus, and his son, Erasmus (Silhouette), A. 2 Darwin, Mrs. (Silhouette), A. 3 Galton, Samuel Tertius, his son Erasmus, and three daughters (Silhouette), A. 4 Galton, Sir Francis, by Charles Furze, A. 1 Poultry, _see_ Blue Andalusian Fowls Pregnancy, effect on, of Female Labour, C. 99-101 Premature Births and Abortion in various Callings, C. 101 in relation to Conception losses, C. 52(2) Princely families, Infantile Mortality in, in relation to Numerical position, C. 53 Principles of Heredity Charts of, P. Progeny of the Highly Gifted in France, C. 124 Progressive Muscular Atrophy, Inheritance of, C. 13 Prolificness of First Marriages, 19th century, C. 40 Protestant Countries, Birth- and Death-rates and Infant Mortality in, H. 11-13 Prussia, Fertility (restricted) in, C. 126 Prussia Lunatic Asylums of, Frequency in, of Delirium tremens, Epilepsy, and General Paralysis, C. 88 Male Life-duration in, Urban and Rural, C. 22 Ptolemäus X., pedigree of, shewing Inbreeding, C. 113 PUNNETT, PROF. R. C., M. 1-7 (_b_) Q Qualities, Descent of, in a Population (after Galton), O. 4 R Rabbits, Mendelian Inheritance in, M. 1, 2 Rachitic disturbances of Development, Frequency of, in relation to Duration of Breast-feeding, C. 78