Maintenance allowances, [104]

Malthus, [5]

Maltreatment of children, [196], [260-269]

Manual training, [204-208]

Marasmus. See [Atrophy]

Margate, [183]

Mark system, [239]

Marriage, [15], [71-89]

— and disease. See Marriage and Heredity

— early, [15]