Domestic animals, races of; change of breeds of.
Domestication, influence of, in removing the sterility of hybrids.
D’Orbigny, A., on the influence of dampness and dryness on the colour of the skin; on the Yuracaras.
Dotterel.
Doubleday, E., on sexual differences in the wings of butterflies.
Doubleday, H., on the proportion of the sexes in the smaller moths; males of Lasiocampa quercus and on the attraction of the Saturnia carpini by the female; on the proportion of the sexes in the Lepidoptera; on the ticking of Anobium tesselatum; on the structure of Ageronia feronia; on white butterflies alighting upon paper.
Douglas, J.W., on the sexual differences of the Hemiptera; colours of British Homoptera.
Down, of birds.
Draco, gular appendages of.
Dragonet, Gemmeous.