INDEX

Ability, heredity of, [146], [147].
heredity and pedigrees of, [176-181].
Acquired characteristics, relation of, to heredity, [199-207].
Adaptedness, [200-202].
Albinism, and order of birth, [125], [126].
heredity of, [142].
Alcoholism, heritable effects of, [203-207].
American Breeders' Association, [15], [196].
Andalusian fowl, heredity of color in, [81-83].
Angio-neurotic œdema, pedigree of, [168], [170].
Aristotle, [18].
Bagatelle board, to illustrate variability, [58-60].
Bateson, William, [81], [100].
Bentley, Madison, quoted, [19].
Biffen, R. H., [133].
Biology, and Sociology, [8], [35-45].
eugenic applications of, [38-40], [49] et seq.
Biometric Laboratory, [14].
Bio-Sociology, [8].
Birth rate, and social status, [116-123].
decreasing, in England, [122].
Boies, abstract of Winship's data of Edwards family, [187], [188].
Booth, classification of London population, [70].
Brachydactylism, heredity of, [142].
pedigree of, [150-153].
Cataract, heredity of, [143].
pedigree of, [157], [159].
Cephalic index, heredity of, [140], [144].
Chance, law of, [56-58].
Child labor laws, effect of, [211], [212].
Chorea, Huntington's, heredity of, [143].
pedigree of, [160], [165].
Church, influence and opportunities of, [231].
Civic worth, variability of, [70].
Coefficient of correlation, [110], [111].

Coefficient of correlation between birth rate and social status, [117].
positive and negative, [111-113].
significance of, [111].
Coefficient of heredity, [109].
human, [140].
Coefficient of variability, [62], [63].
human, [69].
Color blindness, heredity of, [142].
Connecticut, vasectomy statute of, [220-222].
Conservation of human protoplasm, [136].
Correlation, [103], [104].
coefficient of, [110], [111].
social status and birth rate, [116-123].
Cousin marriage, regulation of, [154], [155].
Criminality, and order of birth, [125], [126].
increase in, [29].
Darwin, pedigree of, [181], [183].
quoted, [6], [184].
Data, need for and collection of, [192].
Davenport, quoted, [192-195].
Deaf, United States census of, [34].
Deaf and dumb, United States census of, [34].
Deaf-mutism, heredity of, [143].
Deaf-mutism, pedigree of, [160], [167].
Defect, and order of birth, [123-126].
Defectives, number of, in Great Britain, [31].
United States census of, [34].
Dependents, United States census of, [34].
Determiners, absence of, [143].
in germ, [54].
in Mendelian heredity, [88-95].
Development of the individual, [51].
as a form of reaction, [52], [53].
Die Familie Zero, [184-187].
Differential fertility, [113-121].
Dominance, in Mendelian heredity, [84].
irregular and incomplete, [87].
Dominant characteristics, [85].
Drapers' Company, [14].
Dugdale, account of "Jukes" family, [182-184].
quoted, [236], [237].
Education, [20], [71].
heritable effects of, [200].
Edwards, Jonathan, descendants of, [187], [188].
Elderton, quoted, [209-211].
Employer's liability laws, effects of, [211].

England, falling birth rate in, [122].
number of defectives in, [31], [32].
Environment, effects of, [197-207].
Eugenics, aims of, [5], [42-45], [114], [123].
as a factor in religion, [239], [240].
definition of, [3].
encouragement of ideals of, [234-240].
history of, [10-13].
objections to, [191].
practice of, [215-234].
program of, [189-240].
Eugenics Committee of American Breeders' Association, [15], [196].
Eugenics Education Society, [14].
Eugenics Laboratory, [14].
Eugenics Record Office, [15].
Eugenics Review, [14].
External conditions, effects of, [199-203].
Eye color, heredity of, [140], [142], [143].
Fabian Society, [122].
Familie Zero, [184-187].
Family histories. See [Pedigrees].
Feeble-minded, in Great Britain, [32].
in United States, [34].
Feeble-mindedness, pedigree of, [162-169].
Fellows of the Royal Society, mental heredity in, [145], [146].
Fertility, and social status, [116-123].
differential (selective), [113], [121].
in normal and pathological stocks, [115].
of various classes, [120], [121].
Fluctuation, [56].
Forearm, heredity in length of, [140].
Fowl, color heredity in Andalusian, [81-83].
Functional modification, non-inheritance of, [199-207].
Galton, Sir Francis, illustrations of variability, [58], [63].
in history of Eugenics, [9-13].
on mental heredity, [144-146].
pedigree of, [181-183].
quoted, [5], [44], [45], [236], [239], [240].
Gametic coupling, [100].
Germ, relation of, to adult structure, [50].
Germ cells, relation of, to Mendel's law, [88-94].
Goddard, account of feeble-minded family, [162-169].

Great Britain, number of defectives, etc., [31], [32].
Greece, [9], [10].
Guinea-pig, heredity of color in, [84-87].
Hæmophilia, heredity of, [143].
Hair color and curliness, heredity of, [140], [142].
Harrow, mental heredity in students of, [147].
Head measurements, heredity of, [140].
[Heredity], coefficient of, [109], [140].
definition of, [77].
human, [137-188].
Mendelian formula of, [80-102].
in human traits, [142].
need for studies in, [212], [213].
of acquired characters (modifications), [199-207].
psychic characters, [143-147].
relation of, to Eugenics, [78], [79].
statistical formula of, [80], [102-113].
Heron, David, birth rate, and net fertility of social classes, [116], [119-121].
Homicides, number of, in United States, [30].
Huntington's chorea, heredity of, [143].
pedigree of, [160], [165].
Idiots, statistics of, [32].
Imbeciles, statistics of, [32].
Imbecility, heredity of, [143].
Immunity, relation of, to heredity of disease, [168-173].
Index of variability, [62].
Indiana, vasectomy statute of, [218], [219].
Infection, heredity of, diseases and defects due to, [168-173].
Infertility, pedigree of, [174], [175].
Inheritance. See [Heredity].
Insane, statistics of, [31-34].
Insanity, and order of birth, [124-126].
associated with alcoholism, [205], [206].
Internationale Gesellschaft für Rassen-Hygiene, [230].
Jennings, [66].
Johannsen, [66].
Jordan, David Starr, quoted, [209].
Jörger, Die Familie Zero, [184-187].
"Jukes" family, [182-184].
Keratosis, heredity of, [142].
Lankester, Sir E. Ray, "Kingdom of Man," [21-24].
quoted, [7].

L'Elite, [10].
[Lobster claw], heredity of, [155].
pedigree of, [155], [157].
London, number of children in, [122].
university of, [14].
Man's place in Nature, [6], [7].
Marriage, antecedents to, [238], [239].
restrictions in, [228-232].
Mediocrity, [61].
Mendel, Gregor, [83], [84].
Mendelian formula of heredity, [80-102].
Mendelism and eugenic practice, [97], [233].
Mendel's law, and unit characters, [95-99].
characteristics inherited according to, [98], [99].
human, [142], [143].
complications of, [100].
present limitations of, [100-102].
Mental ability, pedigrees of, [176-181].
Mental defect, heredity of, [147], [160], [165], [162-169].
Mental traits, heredity of, [143-147].
Models, illustrating variability and variation, [59], [63-64].
Murders, number of, [30].
Mutation, [63-66].
National Association of British and Irish Millers, [133].
Natural selection, [21-23], [45].
Nettleship, pedigree of night blindness, [158-163].
Night blindness, heredity of, [143].
pedigrees of, [157], [158], [161], [163].
Normal frequency curve, [56-60].
Nurture, [17], [76].
Œdema, pedigree of angio-neurotic, [168-170].
Ohio Institution for the Feeble-Minded, superintendent quoted, [33].
Oneida community, [10].
Ontogeny, [51].
Oöphorectomy (oöphorotomy), [218-222].
Order of birth and pathological defect, [123-126].
Oxford, mental heredity in graduates of, [146], [147].
Paupers, United States census of, [34].
Pearson, Karl, [14], [27], [36].
heredity in school children, [143], [144].
quoted, [127-130], [216-218], [225-227].
Pedigrees of ability, [176-181].

Pedigrees of angio-neurotic œdema, [168], [170].
of brachydactylism, [150-153].
of cataract, [157], [159].
of deaf-mutism, [160], [167].
of feeble-mindedness, [162-169].
of Huntington's chorea, [160], [165].
of infertility, [174], [175].
of lobster claw or split hand, [155-157].
of night blindness, [157-163].
of polydactylism, [155], [156].
of tuberculosis, [168-171].
Plato, [3], [9].
Ploetz, Dr. Alfred, [230].
Poellman, family described by, [181].
Polydactylism, heredity of, [142].
pedigree of, [155], [156].
Population, of Europe and North America, [25], [26].
Practice of Eugenics, [192-240].
Prisoners, number of, in United States, [29], [30].
Probability, law of, [56-59].
Pure bred, [97].
Pure line, [67], [72].
Recessive characteristics, [85].
Regression, [105-108].
Regression line, [106], [107].
Rentoul, statistics of defectives, [31].
Rentoul's operation, [218-222].
Research, in the eugenic program, and need for, [196-215].
Restrictions in marriage, [154], [155], [230], [231].
Royal Society, mental heredity in Fellows of, [145], [146].
School children, heredity in, [143], [144].
Schuster, on mental heredity, [146], [147].
Scottish Commission, statistics of insane, [31].
Selective fertility, [113-122].
Sex limited heredity, [100].
Size of family, [114], [115].
and relative proportion of defectives, [126].
Social practices, investigation of, [207-212].
opposed to Eugenics, [227], [228].
Social status, and birth rate, [116-123].
Social variation, [75].
Society for social and racial hygiene (Munich), [230].
Sociological Society, [12].
Sociology, aims of, [35], [42].
and Biology, [8], [35-45].
Span, heredity of, [140].

Species, relation of, to pure line, [66].
Split hand. See [Lobster claw].
Sports, [65].
Standard deviation, [62].
Statistical formula of heredity, [80], [81], [102-113].
Stature, heredity of, [140].
of mothers, [56], [57].
Sterilization, eugenic value of, [222-225].
statutes permitting, [218-223].
"Studies in National Deterioration," [14].
Symbols used in pedigrees, [149].
Syndactylism, heredity of, [142].
Theognis, [3].
Thomson, [40].
"Treasury of Human Inheritance," [196].
symbols used by, [148-150].
Tredgold, quoted, [224], [225].
Tuberculosis, and order of birth, [124], [125].
associated with alcoholism, [204].
pedigree of pulmonary, [168], [171].
Typhoid fever, eradication of, [223].
Unit characters, [53].
list of, [98], [99].
Unit characters, relation of, to Mendel's law, [95-99].
United States Census Reports, statistics of defectives, etc., [28-34].
University of London, [14].
Variability, [56-63].
measure (coefficient) of, [61-63].
of human traits, [69], [70].
Variation, [55-70].
and modification, [75].
application of, in Eugenics, [70-77].
distinguished from variability, [63], [64].
Vasectomy, [218-225].
Connecticut statute permitting, [220-222].
Indiana statute permitting, [218], [219].
Wallace, Alfred Russell, [6].
Warbasse, quoted, [195].
Webb, Sidney, [122].
Wheat, new varieties of, [133], [134].
Whetham, quoted, [35], [74], [75], [229], [237-239], [240].
Winship, data regarding Edwards family, [187], [188].
Woods, heredity in royalty, [145].
Zero, Die Familie, [184-187].

TRANSCRIBER'S NOTES

1. Images and tables have been moved from the middle of a paragraph to the closest paragraph break.

2. Figure 17 is missing from the scanned pages even though there is no break in the continuity of page numbers.

3. The following misprints have been corrected:
"stattistical" corrected to "statistical" (page 81)
Removed stray bracket in "second parent)" (page 93)
Added period at end of abbreviation "N.S.W" (page 115)
"conditons" corrected to "conditions" (page 245)

4. Other than the corrections listed above, printer's inconsistencies in spelling, punctuation, hyphenation, and ligature usage have been retained.