Charts Explaining Method of Collecting and Recording Data, D. 15 (_a_ & _b_) Childbirth, increasing Frequency of Surgical Operations in connection with, Racial significance of, C. 48 (1-6) Childless and Fertile Couples, Physical Condition of, contrasted, C. 45 Children, _see also_ Infant Mortality, Numbers, Numerical Position, &c. of Drunkards, Abnormalities observed in, C. 92 Health of, in connection with Blood-relationship of Parents, C. 108 Mortality of, Death-age of Parents in relation to, up to 5 years, C. 9, 10 up to 20 years, C. 7, 8 illegitimate, C. 104, 105 Number of children in relation to, C. 60 Number of, Average in each Generation, Mannheim, C. 38 in Paris, in relation to Wealth, C. 119 Cleopatra, Pedigree of, showing Inbreeding, C. 114 Colour-Blindness, Congenital, Pedigree with unusual features, L. 1 Colour-Changes in Skin of Fire-Salamander, according to placing on Yellow or Black Earth, C. 1, 2 Colours, Recombination of in Poultry, Mendelian experiments shewing, M. 3 Comparison of Mr. Booth's Classification of "All London," with the Normal Classes, O. 3 Conceptions and Conception Losses, Numbers of, and Explanations, C. 52 (1-4) Congenital Colour-Blindness, Pedigree with unusual features, L. 1 Hereditary Nystagmus, L. 3 (_a_ & _b_) Constitution, _see_ Hereditary _do._ Consumption in three Generations, Male Infant Mortality, E. 5 (_c_) Copenhagen, Fertility of Marriages, Occupation, and Wealth for, C. 122 Countries with Rising Birth-rate, H. 21-4 Stationary Birth-rate, H. 17-20 Country, _versus_ Town Fertility, in Prussia, C. 126, 128 Cross-Fertilization in Maize, C. 111 Crossing of Races Fertility and Health in relation to, C. 117 Inbreeding and, C. 106, 107 D Darwin, Charles, Home of, Down House Study-rooms of, at Down Etching of Large, by Haig, B. 7 Photograph of Small, in which "The Origin of Species" was written, B. 6 Water-colour Drawing of, by A. Goodwin, B. 8 Letters of (Two) on "Worms and their Habits," B. 9 Portraits of Engraving, by Flameng after Collier, B. 4 Portraits of Painting, by W. W. Ouless, B. 1 Photograph, by Maull and Polyblank, B. 3 on his Horse, Tommy, B. 5 Darwin, Dr. Erasmus, and his son, Erasmus, Portraits of (Silhouette), A. 2 Darwin, Mrs., Portrait of (Silhouette), A. 3 DARWIN, WILLIAM E., and LEONARD, B. 1 to 9 Darwin, Galton, and Wedgwood Families, Inheritance of Ability as exemplified by, O. 5 Daughters, Suckling Capacity of, as affected by Paternal Alcoholism, C. 93 DAVENPORT, C. B., P. Death-rates, _see also_ Birth-, and Death-rates of Married and Divorced Persons, and of Widows, compared, C. 102 Deaths, in relation to Conception losses, C. 52, 53 Defect, Transmission of, Pauperism due to, E. 1-6 (_d_)