HIBBERT, Mr., on the pigs of the Shetland Islands.

HIBISCUS, See Paritium.

HIGHLAND cattle, descended from Bos longifrons.

HILDEBRAND, Dr., on graft-hybrids with the potato. -on the influence of pollen on the mother-plant. -on the fertilisation of Orchideae. -occasional necessary crossing of plants. -on seeds not fitted for distribution. -potato-grafting. -crossing of varieties. -on Primula sinensis and Oxalis rosea. -on Corydalis cava.

HILL, R., on the Alco. -feral rabbits in Jamaica. -feral peacocks in Jamaica. -variation of the Guinea fowl in Jamaica. -sterility of tamed birds in Jamaica.

HIMALAYA, range of gallinaceous birds in the.

HIMALAYAN rabbit. -skull of.

HIMALAYAN sheep.

HINDMARSH, Mr., on Chillingham cattle.

"HINKEL-TAUBE."

HINNY and mule, difference of.

Hipparion, anomalous resemblance to, in horses.

Hippeastrum, hybrids of.

HIVE-BEES, ancient domestication of. -breeds of. -smaller when produced in old combs. -variability in. -crossing of Ligurian and common.

HOBBS, FISHER, on interbreeding pigs.

"HOCKER-TAUBE."

HODGKIN, Dr., on the attraction of foxes by a female Dingo. -origin of the Newfoundland dog. -transmission of a peculiar lock of hair.

HODGSON, Mr., domestication of Canis primaevus. -development of a fifth digit in Thibet mastiffs. -number of ribs in humped cattle. -on the sheep of the Himalaya. -presence of four mammae in sheep. -arched nose in sheep. -measurements of the intestines of goats. -presence of interdigital pits in goats. -disuse a cause of drooping ears.

HOFACKER, persistency of colour in horses. -production of dun horses from parents of different colours. -inheritance of peculiarities in handwriting. -heredity in a one horned stag. -on consanguineous marriages.

HOFFMAN, Prof., on Raphanus.

HOG, Red River.

HOGG, Mr., retardation of breeding in cows by hard living.

HOLLAND, Sir H., necessity of inheritance. -on hereditary diseases. -hereditary peculiarity in the eyelid. -morbid uniformity in the same family. -transmission of hydrocele through the female. -inheritance of habits and tricks.

HOLLY, varieties of the. -bud-reversion in. -yellow-berried.

HOLLYHOCK, bud-variation in. -non-crossing of double varieties of. -tender variety of the.

HOMER, notice of geese. -breeding of the horses of Aeneas.

HOMOLOGOUS parts, correlated variability of. -fusion of. -affinity of.

HOOFS, correlated with hair in variation.

HOOK-BILLED duck, skull figured.

HOOKER, Dr. J.D., forked shoulder-stripe in Syrian asses. -voice of the cock in Sikkim. -use of Arum-roots as food. -native useful plants of Australia. -wild walnut of the Himalayas. -variety of the plane-tree. -production of Thuja orientalis from seeds of T. pendula. -singular form of Begonia frigida. -reversion in plants run wild. -on the sugar-cane. -on Arctic plants. -on the oak grown at the Cape of Good Hope. -on Rhododendron ciliatum. -stock and mignonette perennial in Tasmania.

HOPKIRK, Mr., bud-variation in the rose. -in Mirabilis jalapa. -in Convolvulus tricolor.

HORNBEAM, heterophyllous.

HORNED fowl. -skull figured.

HORNLESS cattle in Paraguay.

HORNS of sheep. -correlation of. -with fleece in sheep. -correlation of, with the skull. -rudimentary in young polled cattle. -of goats.

HORSES, in Swiss lake-dwellings. -different breeds of, in Malay Archipelago. -anomalies in osteology and dentition of. -mutual fertility of different breeds. -feral. -habit of scraping away snow. -mode of production of breeds of. -inheritance and diversity of colour in. -dark stripes in. -dun-coloured, origin of. -colours of feral. -effect of fecundation by a quagga on the subsequent progeny of. -inheritance of peculiarities in. -polydactylism in. -inheritance of colour in. -inheritance of exostoses in legs of. -reversion in. -hybrids of, with ass and zebra. -prepotency of transmission in the sexes of. -segregation of. -in Paraguay. -wild species of, breeding in captivity. -curly, in Paraguay. -selection of, for trifling characters. -unconscious selection of. -natural selection in Circassia. -alteration of coat of, in coal-mines. -degeneration of, in the Falkland Islands. -diseases of, caused by shoeing. -feeding on meat. -white and white-spotted, poisoned by mildewed vetches. -analogous variations in the colour of. -teeth developed on palate of. -of Bronze period in Denmark.

Charles Darwin

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