NAILS, growing on stumps of fingers, 27.
NAIS, scission of, 27.
NAMAQUAS, cattle of the, 3, 20.
NARCISSUS, double, becoming single in poor soil, 18.
NARVAEZ, on the cultivation of native plants in Florida, 9.
Nasua, sterility of, in captivity, 18.
“NATAS” or Niatas, a South American breed of cattle, 3.
NATHUSIUS, H. VON, on striped horses, 2;
—on the pigs of the Swiss lake-dwellings, 3;
—on the races of pigs, 3;
—convergence of character in highly-bred pigs, 3, 21;
—causes of changes in the form of the pig’s skull, 3 (2);
—changes in breeds of pigs by crossing, 3;
—change of form in the pig, 23;
—effects of disuse of parts in the pig, 24;
—period of gestation in the pig, 3;
—appendages to the jaw in pigs, 3;
—on Sus pliciceps, 3;
—period of gestation in sheep, 3;
—on Niata cattle, 3;
—on shorthorn cattle, 17;
—on interbreeding, 17;
—in the sheep, 17;
—in pigs, 17;
—unconscious selection in cattle and pigs, 20;
—variability of highly-selected races, 21.
NATO, P., on the Bizzarria orange, 11.
NATURAL selection, its general principles, Introduction.
NATURE, sense in which the term is employed, Introduction.
NAUDIN, supposed rules of transmission in crossing plants, 14;
—on the nature of hybrids, 13 (2);
—essences of the species in hybrids, 27 (2);
—reversion of hybrids, 13 (3);
—reversion in flowers by stripes and blotches, 13;
—hybrids of Linaria vulgaris and purpurea, 15;
—pelorism in Linaria, 13, 14;
—crossing of peloric Linaria with the normal form, 14;
—variability in Datura, 22;
—hybrids of Datura laevis and stramonium, 11;
—prepotency of transmission of Datura stramonium when crossed, 14;
—on the pollen of Mirabilis and of hybrids, 11;
—fertilisation of Mirabilis, 27;
—cultivated Cucurbitaceæ, 10 (2), 16;
—rudimentary tendrils in gourds, 24;
—dwarf Cucurbitæ, 25;
—relation between the size and number of the fruit in Cucurbita pepo, 26;
—analogous variation in Cucurbitæ, 22;
—acclimatisation of Cucurbitaceæ, 24;
—production of fruit by sterile hybrid Cucurbitaceæ, 18;
—on the melon, 10, 16, 23;
—incapacity of the cucumber to cross with other species, 10.
NECTARINE, 10;
—derived from the peach, 10 (2);
—hybrids of, 10;
—persistency of characters in seedling, 10;
—origin of, 10;
—produced on peach-trees, 10 (2);
—producing peaches, 10;
—variation in, 10 (2);
—bud-variation in, 11;
—glands in the leaves of the, 21;
—analogous variation in, 26.
NECTARY, variations of, in pansies, 10.
NEES, on changes in the odour of plants, 23.
“NEGRO” cat, 1.
NEGROES, polydactylism in, 12;
—selection of cattle practised by, 20.
NEOLITHIC period, domestication of Bos longifrons and primigenius in the, 3;
—cattle of the, distinct from the original species, 3;
—domestic goat in the, 3;
—cereals of the, 9.
NERVE, optic, atrophy of the, 24.
NEUBERT, potato-grafting, 11.
NEUMEISTER, on the Dutch and German pouter pigeons, 5;
—on the Jacobin pigeon, 5;
—duplication of the middle flight feather in pigeons, 5;
—on a peculiarly coloured breed of pigeons, “Staarhalsige Taube,” 5;
—fertility of hybrid pigeons, 6;
—mongrels of the trumpeter pigeon, 14;
—period of perfect plumage in pigeons, 14;
—advantage of crossing pigeons, 17.
NEURALGIA, hereditary, 14.
NEW ZEALAND, feral cats of, 1;
—cultivated plants of, 9.
NEWFOUNDLAND dog, modification of, in England, 1.
NEWMAN, E., sterility of Sphingidæ under certain conditions, 18.
NEWPORT, G., non-copulation of Vanessæ in confinement, 18;
—fertilisation of the ovule in batrachia, 27.
NEWT, polydactylism in the, 12.
NEWTON, A., absence of sexual distinctions in the Columbidæ, 5;
—production of a “black-shouldered” peahen among the ordinary kind, 8;
—on hybrid ducks, 18.
NGAMI, Lake, cattle of, 3.
“NIATA” cattle, 3;
—resemblance of, to Sivatherium, 3;
—prepotency of transmission of character by, 14.
“NICARD” rabbit, 4.
NICHOLSON, Dr., on the cats of Antigua, 1;
—on the sheep of Antigua, 3.
Nicotiana, crossing of varieties and species of, 3;
—prepotency of transmission of characters in species of, 14;
—contabescence of female organs in, 18.
Nicotiana glutinosa, 16.
NIEBUHR, on the heredity of mental characteristics in some Roman families, 14.
NIGHT-BLINDNESS, non-reversion to, 13.
NILSSON, Prof., on the barking of a young wolf, 1;
—parentage of European breeds of cattle, 3 (2);
—on Bos frontosus in Scania, 3.
NIND, Mr., on the dingo, 1.
“NISUS formativus,” 24 (2), 26.
NITZSCH, on the absence of the oil-gland in certain Columbæ, 5.
NON-INHERITANCE, causes of, 12.
“NONNAIN” pigeon, 5.
NORDMANN, dogs of Awhasie, 1.
NORMANDY, pigs of, with appendages under the jaw, 3.
NORWAY, striped ponies of, 2.
NOTT and Gliddon, on the origin of the dog, 1;
—mastiff represented on an Assyrian tomb, 1;
—on Egyptian dogs, 1;
—on the Hare Indian dog, 1.
Notylia, 17.
NOURISHMENT, excess of, a cause of variability, 22.
NUMBER, importance of, in selection, 21.
Numida ptilorhyncha, the original of the Guinea-fowl, 8.
NUN pigeon, 5;
—known to Aldrovandi, 6.
NUTMEG-TREE, 21.
OAK, weeping, 10, 12, 21;
—pyramidal, 10;
—Hessian, 10;
—late-leaved, 10;
—valueless as timber at the Cape of Good Hope, 23;
—changes in, dependent on age, 11;
—galls of the, 23.
OATS, wild, 9;
—in the Swiss lake-dwellings, 9.
OBERLIN, change of soil beneficial to the potato, 18.
ODART, Count, varieties of the vine, 10, 23;
—bud-variation in the vine, 11.
Œcidium, 23.
Œnothera biennis, bud-variation in, 11.
OGLE, Dr. J. W., inherited deficient phalanges, 12;
—resemblance of twins, 22 (2).
OIL-GLAND, absence of, in fantail pigeons, 5 (2).
OLDFIELD, Mr., estimation of European dogs among the natives of Australia, 20.
OLEANDER, stock affected by grafting in the, 11.
OLLIER, Dr., insertion of the periosteum of a dog beneath the skin of a rabbit, 27.
Oncidium, reproduction of, 17, 18.
ONIONS, crossing of, 15;
—white, liable to the attacks of fungi and disease, 21, 25.
Ophrys apifera, self-fertilisation of, 15;
—formation of pollen by a petal in, 27.
Opuntia leucotricha, 23.
ORANGE, 10;
—crossing of, 15;
—with the lemon, 11, 27;
—naturalisation of, in Italy, 24;
—variation of, in North Italy, 22;
—peculiar variety of, 25;
—bizzarria, 11;
—trifacial, 11.
ORCHIDS, reproduction of, 11 (2), 17.
ORFORD, Lord, crossing greyhounds with the bulldog, 1.
ORGANISMS, origin of, Introduction.
ORGANISATION, advancement in, Introduction.
ORGANS, rudimentary and aborted, 24;
—multiplication of abnormal, 27.
ORIOLE, assumptions of hen-plumage by a male in confinement, 18.
ORKNEY Islands, pigs of, 3;
—pigeons of, 6.
ORTHOPTERA, regeneration of hind legs in the, 24.
Orthosia munda, 18.
ORTON, R., on the effects of cross-breeding on the female, 11;
—on the Manx cat, 14;
—on mongrels from the silk fowl, 14;
—infertility of geese in Quito, 18.
OSBORNE, Dr., inherited mottling of the iris, 12.
OSPREY, preying on black fowls, 21.
OSTEN-SACKEN, Baron, on American oak-galls, 23.
OSTEOLOGICAL characters of pigs, 3 (4);
—of rabbits, 4;
—of pigeons, 5;
—of ducks, 8.
OSTRICH, diminished fertility of the, in captivity, 18.
OSTYAKS, selection of dogs by the, 20.
OTTER, 18.
“OTTER” sheep of Massachusetts, 3.
OUDE, feral humped cattle in, 3.
OUISTITI, breed in Europe, 18.
OVARY, variation of, in Cucurbita moschata, 10;
—development of, independently of pollen, 11.
Ovis montana, 3.
OVULES and buds, identity of nature of, 27.
OWEN, Capt., on stiff-haired cats at Mombas, 1.
OWEN, Prof. R., palæontological evidence as to the origin of dogs, 1;
—on the skull of the “Niata” cattle, 3;
—on fossil remains of rabbits, 3;
—on the significance of the brain, 4;
—on metagenesis, 27;
—theory of reproduction and parthenogenesis, 27.
OWL, eagle, breeding in captivity, 18.
OWL pigeon, 5;
—African, figured, 5;
—known in 1735, 6.
Oxalis, trimorphic species of, 27.
Oxalis rosea, 17.
OXLEY, Mr., on the nutmeg-tree, 21.
OYSTERS, differences in the shells of, 23.