Development, theory of, by whom originated and supported, 4; opinion of its absurdity, 6; facts and principles necessary to, (variation, 7; Inheritance and Reversion, 9; struggle for life, 11; antiquity of the globe, 30; freedom of the globe from any recent universal catastrophe, 31); application of, to human body and mind, 62, 95; time required for, 122; not materially affected by hypothesis of spontaneous generation, 127. Ducklings, experiment with, 73. Earth, immense age of, required by Theory of Development, 30, 67; proved by geology, 31, 54, 107, 121; popular impression as to age of, 93, 121; reckoned by millions of years, 123. Egypt, its monuments, 51; its chronology, 56, 101. Elephant, its sagacity, 3; its rate of breeding, 13; its different species, 46; its memory, 66; epithet applied to it by Pope, 74; in Devonshire, 112. Esquimaux, their ignorance of arithmetic, 103. Flint-tools, 109, 111, 113. Flood, the Noachian, 34-61; historical account of, 38; explanation suggested, 41; how consistent with Darwinism, 50; traditions of a, 58; no traces of its universality, 59. Food, its influence on the animal and vegetable kingdoms, 12; in the competition for life, 22. Fossils, an evidence of variation, 20; different in different strata, 116; time required for vicissitudes of, 119; necessary imperfection of, 134; their scarcity and abundance, 141; numerous chances of loss and destruction for, 146. Fuegians, nakedness of, 112, _note_. Galileo, his doctrine of the earth’s motion condemned, 60, 148. Genesis, book of, its chronology, 55. ‘Genesis of Species,’ by Mr. Mivart, 173. Geology, its conclusions, 31, 53; imperfection of its record, 133-146. Giraffes, 176, 179. Glacial Period, its effect on distribution of species, 47. Gooseberry, the big, 16. Horse, career of, in America, 48; its endurance and ambition, 3; its intelligence, 66; instance thereof, 74; its intercourse with man, 80. Hypotheses, use of, 131. Inheritance, 9; at different periods of life, 18. Instinct, of bees, 25; employment and gradations of, in various animals, 28; compared with reason, 62-81, 164; fallacious theory of, 67; ignored by ducklings, 73; fancied excellence of, 86. Kent’s cavern, 109-115. Language, time required for variations of, 57; its influence on mankind, 77, 87; origin of, 103. Light, rapidity of, 97. Limestone, formation of, 109; contents of, 115; slow formation of, 117; Devonian, older than the New Red Sandstone, 118. Lindley, Dr., his experiment with immersed vegetables, 143. Linnæus, on the common descent of species, 3. Lion, its generosity, 3; instance of its affection, 76; instance of its gratitude, 83; in Britain, 112. Locke, on the reason of brutes, 74.