Paradise, 93.
Maize, American, 100.
Mammals, 67.
Mammary gland of kangaroo, 42.
Mammary gland, origin of, 47.
Man, origin of, 277.
Man reveals God, 267.
Man, voice of, 54.
Manatee, 41, 175.
Manchamp breed of sheep, 100.
Manis, 175.
Man's larynx, 54.
Many simultaneous modifications, 57.
Marcus Aurelius, 206.
Martineau, Mr. James, 200, 245.
Mastacembelus, 145.
Materially moral acts, 195.
Matter, crystalline and colloidal, 266.
Meaning of word "individual," 2.
Meaning of word "species," 2.
Mechanical theory of spine, 164.
Mediterranean oyster, 88, 98.
Meehan, Mr., 88.
Mexico, dogs in, 99.
Mill, John Stuart, 15, 189, 193, 194.
Mimicry, 8, 29.
Miracle, 287.
Molars, 111.
Mole, 176.
Moliere, 230.
Mombas, cats at, 98.
Monkeys, American, 226.
Monster proboscis, 123.
Moral acts, 195.
Mordacia, 147.
Murphy, Mr. J. J., 52, 53, 76, 103, 114, 115, 137, 185, 221, 276, 281.
Murray, Mr. Andrew, 83.
Mus delicatulus, 82.
Muscles of limbs, 180.
Mussel, 79.
Myrmecophaga, 83.

N.
Nasalis, Semnopithecus, 139.
Nathusius, 99.
Natural Selection, shortly stated, 5.
Naudin, M. C., 101.
Nautilus, 76.
Nebular evolution, 273.
Neck of giraffe, 24.
Newman, the Rev. Dr., 260, 268, 270, 286.
[Page 294]
New Zealand crustacea, 149.
New Zealand fishes, 147.
Niata cattle, 100.
Nile fishes, 146.
Normandy pig, 99.
North American fish, 147
Nycticebus, 179.

O.
Object of book, 5.
Objections from astronomy, 136.
Octopods, 77.
Offensive remarks of Prof. Vogt, 13.
Old, care of the, 192.
Old Fuegian women, 192.
Omygena exigua, 115.
Ophiocephalus, 146.
Optic lobes of pterodactyls, 71.
Orchids, 92.
Orchids, Bee, &c., 55.
Organ of hearing, 74.
Organ of sight, 76.
Organic polarities, 185.
Origin of man, 277.
Orioles, 90.
Ornithoptera, 84.
Ornithorhynchus, 175.
Orthoceratidae, 170.
Orycteropus, 174.
Ostracods, 79.
Ostrich, 70.
Otoliths, 74.
Outlines of butterflies' wings, 86.
Owen, Professor, 74, 102, 123, 217, 238, 274.
Oyster of Mediterranean, 88, 98.
Oysters, 79.

P.
Paget, Mr. J., 182.
Palaeotherium, 109.
Pallas, 125.
Pangenesis, 19, 208.
Pangolin, 175.
Papilio Hospiton, 85.
Papilio Machaon, 85.
Papilio Ulysses, 84.
Papilionidae, 83.
Papuan morals, 197, 198.
Parthenogenesis, 217