compulsory flowering of early potatoes, ii. 343;
correlated variation of head and limbs, ii. 323.
KNOX, Mr., breeding of the eagle owl in captivity, ii. 154.
KOCH, degeneracy in the turnip, i. 325.
KOHLRABI, i. 323.
KOELREUTER, reversion in hybrids, i. 392, ii. 36;
acquired sterility of crossed varieties of plants, i. 358, ii. 101;
absorption of _Mirabilis vulgaris_ by _M. longiflora_, ii. 88;
crosses of species of _Verbascum_, ii. 93, 107;
on the hollyhock, ii. 107;
crossing varieties of tobacco, ii. 108;
benefits of crossing plants, ii. 130, 131, 175-176;
self-impotence in _Verbascum_, ii. 136, 141;
effects of conditions of growth upon fertility in _Mirabilis_, ii. 164;
great development of tubers in hybrid plants, ii. 172;
inheritance of plasticity, ii. 241;
variability of hybrids of _Mirabilis_, ii. 265;
repeated crossing a cause of variation, ii. 267-268;
number of pollen-grains necessary for fertilization, ii. 363.
"KRAUSESCHWEIN," i. 67.
KROHN, on the double reproduction of Medusae, ii. 384.
"KROPF-TAUBEN," i. 137.

LABAT, on the tusks of feral bears in the West Indies, i. 77;
on French wheat grown in the West Indies, ii. 307;
on the culture of the vine in the West Indies, ii. 308.
LABURNUM, Adam's, see _Cytisus Adami_;
oak-leaved, reversion of, i. 382;
pelorism in the, ii. 346;
Waterer's, i. 390.
LACHMANN, on gemmation and fission, ii. 358.
_Lachnanthes tinctoria_, ii. 227, 336.
LACTATION, imperfect, hereditary, ii. 8;
deficient, of wild animals in captivity, ii. 158.
LADRONE islands, cattle of, i. 86.
LAING, Mr., resemblance of Norwegian and Devonshire cattle, i. 82.
LAKE-DWELLINGS, sheep of, i. 94, ii. 427;
cattle of, ii. 427;
absence of the fowl in, i. 246;
cultivated plants of, i. 309, ii. 427, 429;
cereals of, i. 317-319;
peas found in, i. 326;
beans found in, i. 330.
LAMARE-PIQUOT, observations on half-bred North American wolves, i. 22.
LAMBERT, A. B., on _Thuja pendula_ or _filiformis_, i. 362.
LAMBERT family, ii. 4, 76.
LAMBERTYE on strawberries, i. 351, 352;
five-leaved variety of _Fragaria collina_, i. 353.
LANDT, L., on sheep in the Faroe islands, ii. 103.
LA PLATA, wild dogs of, i. 27;
feral cat from, i. 47.
LARCH, ii. 310.
LARKSPURS, insect agency necessary for the full fecundation of, ii. 21.
_Larus argentatus_, ii. 157