the fingers, ii. 15;
tendency to variation, ii. 252;
atrophy of the optic nerve consequent on destruction of the eye, ii.
297;
on Janus-like monsters, ii. 340;
on gemmation and fission, ii. 358;
identity of ovules and buds, ii. 360;
special affinities of the tissues, ii. 380.
MUELLER, Max, antiquity of agriculture, ii. 243.
MULTIPLICITY of origin of pigeons, hypotheses of, discussed, i. 188-194.
MUNIZ, F., on Niata cattle, i. 90.
MUNRO, R., on the fertilisation of orchids, ii. 133;
reproduction of _Passiflora alata_, ii. 138.
"MURASSA" pigeon, i. 144.
MURPHY, J. J., the structure of the eye not producible by selection, ii.
222.
_Mus alexandrinus_, ii. 87-88.
_Musa sapientum_, _Chinensis_ and _Cavendishii_, i. 377.
_Muscari comosum_, ii. 185, 316.
MUSCLES, effects of use on, ii. 297.
MUSK duck, feral hybrid of, with the common duck, i. 190.
{466}
MUSMON, female, sometimes hornless, i. 95.
MUTILATIONS, inheritance or non-inheritance of, ii. 22-24, 397.
MYATT, on a five-leaved variety of the strawberry, i. 353.
MYOPIA, hereditary, ii. 8.
MYRIAPODA, regeneration of lost parts in, ii. 15, 294.

NAILS, growing on stumps of fingers, ii. 394.
NAIS, scission of, ii. 358.
NAMAQUAS, cattle of the, i. 88, ii. 207.
NARCISSUS, double, becoming single in poor soil, ii. 167.
NARVAEZ, on the cultivation of native plants in Florida, i. 312.
_Nasua_, sterility of, in captivity, ii. 152.
"NATAS," or Niatas, a South American breed of cattle, i. 89-91.
NATHUSIUS, H. von, on the pigs of the Swiss lake-dwellings, i. 68;
on the races of pigs, i. 65-68;
convergence of character in highly-bred pigs, i. 73, ii. 241;
causes of changes in the form of the pig's skull, i. 72-73;
changes in breeds of pigs by crossing, i. 78;
change of form in the pig, ii. 279;
effects of disuse of parts in the pig, ii. 299;
period of gestation in the pig, i. 74;
appendages to the jaw in pigs, i. 76;
on _Sus pliciceps_, i. 70;
period of gestation in sheep, i. 97;
on Niata cattle, i. 89;
on short-horn cattle, ii. 118;
on interbreeding, ii. 116;
in the sheep, ii. 120;
in pigs, ii. 122;
unconscious selection in cattle and pigs, ii. 214;
variability of highly selected races, ii. 238.
NATO, P., on the Bizzaria orange, i. 391.
NATURAL selection, its general principles, i. 2-14.
NATURE, sense i