Infantile Mortality in relation to Age of Parents, C. 51 Birth Interval (_see also_ that head), C. 57, 58, 66 Long or Short, C. 65 Breast-feeding, _see under_ Breast-feeding Birth- and Death-rates, relation between, H. 1 Female Labour, C. 99-101 Hereditary Constitution, C. 79-82 Marriage of Parents, C. 104, 105 Numerical position in family, C. 50, 60 in Princely families, C. 53 in England and Wales, H. 9 in the Netherlands, H. 10 in New Zealand, H. 26 in Protestant Countries, H. 11-13 in Roman Catholic Countries, H. 14-16 Tuberculosis, and Pauperism, relation between, E. 5 (_a-e_)
Inheritance of Ability, as exemplified in the Darwin, Galton, and Wedgwood Families, O. 5 in Polygamous Utah family, of Physical and Mental Qualities and Defects, and of Literary Ability, N. 1 Segregative of Racial Form of Nose, K. 1-2 (_a_ & _b_)
Insanitary Property in Liverpool, Model of, F. 1 Photographs of, and of New Dwellings erected on demolition of, F. 3 (_a_ & _b_)
Insanity (_see also_ Lunatics), Consumption, and Infant Mortality, E. 5 (_b_)
Interbreeding of Different Human Races, results of, K. 3
Inter-marriage, _see also_ Marriage between Pauper and Defective families, Tendency to, E. 2
Intoxication, Alcoholic, Acute, in relation to Origin of Feeble-mindedness, C. 97
Land, re-settlement of Families dealt with, N. Germany, C. 23-5
Lead-poisoning as affecting Germ-cells and Foetus, C. 98
Legitimate and Illegitimate Children, Berlin, 1885, Survival of, C. 105
Letters (autograph) of Charles Darwin (Two) on "Worms and their Habits," B. 9
LIDBETTER, E. J., E. 1-6 (_d_) Life, Male, Duration of, Urban and Rural, in Prussia, C. 22
LIVERPOOL, CITY OF, PUBLIC HEALTH DEPARTMENT OF, F. 1-3 (_f_)
London (_see also_ All London), Birth- and Death-rates, relation between, H. 3
Low-type Stock, perpetuation of, Pauperism due to, E. 1-6 (_d_) with but little Physical Defect, E. 3
Lunatic Asylums, Prussian, Frequency in, of Delirium tremens, Epilepsy and General Paralysis, C. 88
Maize, Cross fertilized, Hybridized, Self-fertilized, C. 111
Male and Female Mortality, Urban and Rural, compared, C. 83-5 Life, Duration of, Urban and Rural, Prussia, C. 22
Mankind, Eye-colour in, Mendelian descent of, Pedigree shewing, I. 3