UNIFORMITY of character, maintained by crossing.
UNITS of the body, functional independence of the.
UNITY or plurality of origin of organisms.
UREA, secretion of.
USE and disuse of parts, effects of. -in rabbits. -in ducks.
UTILITY, considerations of, leading to uniformity.
VALENTIN, experimental production of double monsters by.
Vallota.
VAN BECK, BARBARA, a hairy-faced woman.
VAN MONS, on wild fruit-trees. -production of varieties of the vine. -correlated variability in fruit-trees. -production of almond-like fruit by peach-seedlings.
Vanessa, species of, not copulating in captivity.
VARIABILITY. -causes of. -correlated. -law of, equable. -necessity of, for selection. -of selected characters. -of multiple homologous parts.
VARIATION, laws of. -continuity of. -possible limitation of. -in domestic cats. -origin of breeds of cattle by. -in osteological characters of rabbits. -of important organs. -analogous or parallel. -in horses. -in the horse and ass. -in fowls. -in geese. -exemplified in the production of fleshy stems in cabbages, etc. -in the peach, nectarine, and apricot. -individual, in wheat.
VARIEGATION of foliage.
VARIETIES and species, resemblance of. -conversion of, into species. -abnormal. -domestic, gradually produced.
VARRO, on domestic ducks. -on feral fowls. -crossing of the wild and domestic ass.
VASEY, Mr., on the number of sacral vertebrae in ordinary and humped cattle. -on Hungarian cattle.
VAUCHER, sterility of Ranunculus ficaria and Acorus calamus.
VEGETABLES, cultivated, reversion in. -European, culture of, in India.
VEITH, Mr., on breeds of horses.
Verbascum, intercrossing of species of. -reversion in hybrids of. -self-sterility of. -contabescent, wild plants of. -villosity in.
Verbascum austriacum.
Verbascum blattaria.
Verbascum lychnitis.
Verbascum nigrum.
Verbascum phoeniceum. -variable duration of.
Verbascum thapsus.
VERBENAS, origin of. -white, liability of, to mildew. -scorching of dark. -effect of changed conditions of life on.
VERLOT, on the dark-leaved barberry. -inheritance of peculiarities of foliage in trees. -production of Rosa cannabifolia by bud-variation from R. alba. -bud-variation in Aralia trifoliata. -variegation of leaves. -colours of tulips. -uncertainty of inheritance. -persistency of white flowers. -peloric flowers of Linaria. -tendency of striped flowers to uniformity of colour. -non-intercrossing of certain allied plants. -sterility of Primulae with coloured calyces. -on fertile proliferous flowers. -on the Irish yew. -differences in the Camellia. -effect of soil on the variegated strawberry. -correlated variability in plants.
Verruca.
VERTEBRAE, characters of, in rabbits. -in ducks. -number and variations of, in pigeons. -number and characters of, in fowls. -variability of number of, in the pig.
VERTUCH. See PUTSCHE.
"VERUGAS."
VESPUCIUS, early cultivation in Brazil.
VIBERT'S experiments on the cultivation of the vine from seed.
Viburnum opulus.
Vicia sativa, leaflet converted into a tendril in.
VICUNAS, selection of.
VILLOSITY of plants, influenced by dryness.
VILMORIN, cultivation of the wild carrot. -colours of tulips. -uncertainty of inheritance in balsams and roses. -experiments with dwarf varieties of Saponaria calabrica and Tagetes signata. -reversion of flowers by stripes and blotches. -on variability.
Vinca minor, sterility in.
VINE. -parsley-leaved, reversion of. -graft-hybrid produced by inosculation in the. -disease of, influenced by colour of grapes. -influence of climate, etc., on varieties of the. -diminished extent of cultivation of the. -acclimatisation of the, in the West Indies.
Viola, species of.
Viola lutea, different coloured flowers in.
Viola tricolor, reversion in.
VIRCHOW, Prof., on the growth of bones. -on cellular prolification. -independence of the elements of the body. -on the cell-theory. -presence of hairs and teeth in ovarian tumours. -of hairs in the brain. -special affinities of the tissues. -origin of polypoid excrescences and tumours.