TAHITI, varieties of cultivated plants in.

TAIL, never curled in wild animals. -rudimentary in Chinese sheep.

TAIL-FEATHERS, numbers of, in breeds of pigeons. -peculiarities of, in cocks. -variability of, in fowls. -curled, in Anas boschas, and tame drakes.

TAIT, LAWSON, presence of hairs and teeth in ovarian tumours.

TALENT, hereditary.

TANKERVILLE, Earl of, on Chillingham cattle.

TANNER, Prof., effects of disuse of parts in cattle.

TAPIR, sterility of the, in captivity.

TARGIONI-TOZZETTI, on cultivated plants. -on the vine. -varieties of the peach. -origin and varieties of the plum. -origin of the cherry. -origin of roses.

TARSUS, variability of the, in fowls. -reproduction of the, in a thrush.

TARTARS, their preference for spiral-horned sheep.

TAVERNIER, abundance of pigeons in Persia.

Taxus baccata.

TAYLOR, Mr., potato-grafting.

TEEBAY, Mr., reversion in fowls.

TEETH, number and position of, in dogs. -deficiency of, in naked Turkish dogs. -period of appearance of, in breeds of dogs. -precocity of, in highly-bred animals. -correlation of, with hair. -double row of, with redundant hair, in Julia Pastrana. -affected in form by hereditary syphilis and by pulmonary tubercle. -developed on the palate.

TEGETMEIER, Mr., on a cat with monstrous teeth. -on a swift-like pigeon. -on sexual colours. -naked young of some pigeons. -fertility of hybrid pigeons. -on white pigeons. -reversion in crossed breeds of fowls. -chicks of the white silk fowl. -development of the cranial protuberance in Polish fowls. -on the skull in the Polish fowl. -on the intelligence of Polish fowls. -correlation of the cranial protuberance and crest in Polish fowls. -development of the web in the feet of Polish fowls. -early development of several peculiarities in Spanish cocks. -on the comb in Spanish fowls. -on the Spanish fowl. -varieties of game-fowls. -pedigrees of game-fowls. -assumption of female plumage by a game-cock. -natural selection in the game-cock. -pugnacity of game-hens. -length of the middle toe in Cochin fowls. -origin of the Sebright bantam. -differences in the size of fowls. -effect of crossing in fowls. -effects of interbreeding in fowls. -incubation by mongrels of non-sitting races of fowls. -inverse correlation of crest and comb in fowls. -occurrence of pencilled feathers in fowls. -on a variety of the goose from Sebastopol. -on the fertility of the peahen. -on the intercrossing of bees.

TEMMINCK, origin of domestic cats. -origin of domestic pigeons. -on Columba guinea. -on Columba leucocephala. -asserted reluctance of some breeds of pigeons to cross. -sterility of hybrid turtle-doves. -variations of Gallus bankiva. -on a buff-coloured breed of turkeys. -number of eggs laid by the peahen. -breeding of guans in captivity. -behaviour of grouse in captivity. -sterility of the partridge in captivity.

TENDRILS in Cucurbitaceae.

TENNENT, Sir J.E., on the goose. -on the growth of the apple in Ceylon. -on the Jaffna sheep.

Teredo, fertilisation in.

TERRIERS, wry-legged. -white, subject to distemper.

TESCHEMACHER, on a husked form of maize.

TESSIER, on the period of gestation of the dog. -of the pig. -in cattle. -experiments on change of soil.

Tetrao, breeding of species of, in captivity.

Tetrapteryx paradisea.

Teucrium campanulatum, pelorism in.

TEXAS, feral cattle in.

THEOGNIS, his notice of the domestic fowl.

THEOPHRASTUS, his notice of the peach.

Thesium.

THOMPSON, Mr., on the peach and nectarine. -on the varieties of the apricot. -classification of varieties of cherries. -on the "Sister ribston-pippin." -on the varieties of the gooseberry.

THOMPSON, WILLIAM, on the pigeons of Islay. -feral pigeons in Scotland. -colour of the bill and legs in geese. -breeding of Tetrao scotius in captivity. -destruction of black fowls by the osprey.

THORN, grafting of early and late. -Glastonbury.

THORNS, reconversion of, into branches, in pear trees.

THRUSH, asserted reproduction of the tarsus in a.

Charles Darwin

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