pigeon, ii. 66;
period of perfect plumage in pigeons, ii. 77;
advantage of crossing pigeons, ii. 126.
NEURALGIA, hereditary, ii. 79.
NEW ZEALAND, feral cats of, i. 47;
cultivated plants of, i. 311.
NEWFOUNDLAND dog, modification of, in England, i. 42.
NEWMAN, E., sterility of Sphingidae under certain conditions, ii. 158.
NEWPORT, G., non-copulation of _Vanessae_ in confinement, ii. 157;
regeneration of limbs in myriapoda, ii. 294;
fertilisation of the ovule in batrachia, ii. 363.
NEWT, polydactylism in the, ii. 14.
NEWTON, A., absence of sexual distinctions in the Columbidae, i. 162;
production of a "black-shouldered" pea-hen among the ordinary kind, i.
291;
on hybrid ducks, ii. 157.
NGAMI, Lake, cattle of, i. 88.
"NIATA" cattle, i. 89-91;
resemblance of to _Sivatherium_, i. 89;
{467}
prepotency of transmission of character by, ii. 66.
"NICARD" rabbit, i. 107.
NICHOLSON, Dr., on the cats of Antigua, i. 46;
on the sheep of Antigua, i. 98.
_Nicotiana_, crossing of varieties and species of, ii. 108;
prepotency of transmission of characters in species of, ii. 67;
contabescence of female organs in, ii. 166.
_Nicotiana glutinosa_, ii. 108.
NIEBUHR, on the heredity of mental characteristics in some Roman
families, ii. 65.
NIGHT-BLINDNESS, non-reversion to, ii. 36.
NILSSON, Prof., on the barking of a young wolf, i. 27;
parentage of European breeds of cattle, i. 80, 81;
on _Bos frontosus_ in Scania, i. 81.
NIND, Mr., on the dingo, i. 39.
"NISUS formativus," i. 293, 294, 355.
NITZSCH, on the absence of the oil-gland in certain Columbae, i. 147.
NON-INHERITANCE, causes of, ii. 24-26.
"NONNAIN" pigeon, i. 154.
NORDMANN, dogs of Awhasie, i. 25.
NORMANDY, pigs of, with appendages under the jaw, i. 75.
NORWAY, striped ponies of, i. 58.
NOTT and Gliddon, on the origin of the dog, i. 16;
mastiff represented on an Assyrian tomb, i. 17;
on Egyptian dogs, i. 18;
on the Hare-Indian dog, i. 22.
_Notylia_, ii. 135.
NOURISHMENT, excess of, a cause of variability, ii. 257.
NUMBER, importance of, in selection, ii. 235.
_Numida ptilorhyncha_, the original of the Guinea-fowl, i. 294.
NUN pigeon, i. 155;
known to Aldrovandi, i. 207.
NUTMEG tree, ii. 237.

OAK, weeping, i. 361, ii. 18, 241;
pyramidal, i. 361;
Hessian, i. 361;
late-leaved, i. 363;
variation in per