The Variation of Animals and Plants under Domestication · Charles Darwin
NUTMEG-TREE, 21.
OAK, weeping, 10, 12, 21; —pyramidal, 10; —Hessian, 10; —late-leaved, 10; —valueless as timber at the Cape of Good Hope, 23; —changes in, dependent on age, 11; —galls of the, 23. OATS, wild, 9; —in the Swiss lake-dwellings, 9. OBERLIN, change of soil beneficial to the potato, 18. ODART, Count, varieties of the vine, 10, 23; —bud-variation in the vine, 11. _Œcidium,_ 23. _Œnothera biennis,_ bud-variation in, 11. OGLE, Dr. J. W., inherited deficient phalanges, 12; —resemblance of twins, 22 (2). OIL-GLAND, absence of, in fantail pigeons, 5 (2). OLDFIELD, Mr., estimation of European dogs among the natives of Australia, 20. OLEANDER, stock affected by grafting in the, 11. OLLIER, Dr., insertion of the periosteum of a dog beneath the skin of a rabbit, 27. _Oncidium,_ reproduction of, 17, 18. ONIONS, crossing of, 15; —white, liable to the attacks of fungi and disease, 21, 25. _Ophrys apifera,_ self-fertilisation of, 15; —formation of pollen by a petal in, 27. _Opuntia leucotricha,_ 23.
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