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Experiments with flowers likewise show that the recessive color will reappear. Also experiments with the interbreeding of animals have shown similar results. The recessive or disappearing characteristics, or the disappearing variety, will appear again, in some subsequent generation, and sometimes becomes permanent.
The teeth of these two kinds of bears show a marked and uniform difference, proving conclusively that there is no interbreeding between the species. I was told by Dr. Merriam that the idea which is so commonly believed, that different species of bears interbreed like dogs, is entirely wrong.
The big red wolf of the South American plains is not closely related to the northern wolves; and it was to me unexpected to find it interbreeding with ordinary domestic dogs.
When any species becomes very rare, close interbreeding will help to exterminate it; authors have thought that this comes into play in accounting for the deterioration of the aurochs in Lithuania, of red deer in Scotland and of bears in Norway, etc.
There they made common cause with the hexans against the humans, and in space of time Ionian humanity ceased to exist. Much traffic and interbreeding followed between the hexans of Jupiter and those of Io, resulting in time in a race intermediate in size between the parent stocks and equally at home in the widely variant air pressures and gravities of planet and satellite.
The general fact of variability; the patent fact, that all species vary more or less; that domesticated plants and animals, being in conditions favorable to the production and preservation of varieties, are apt to vary widely; and that by interbreeding, any variety may be fixed into a race, that is, into a variety which comes true from seed.
Briefly, they look something like Jews, practise a very debased form of the Jewish religion, are civilized and clever after a fashion, but in the last stage of decadence from interbreeding about nine thousand men is their total fighting force, although three or four generations ago they had twenty thousand and live in hourly terror of extermination by the surrounding Fung, who hold them in hereditary hate as the possessors of the wonderful mountain fortress that once belonged to their forefathers."
A bud, collected in their forest, before the age of refinement, impoverishment, and decay, has been transported into a similar and remote nursery, where a tragic and militant regime is permanently established. There the primitive germ is preserved intact and transmitted from one generation to another, renewed and invigorated by interbreeding.
Marshall, Dr. W., protuberances on birds' heads; on the moulting of birds; advantage to older birds of paradise. Marshall, Col., interbreeding amongst Todas; infanticide and proportion of sexes with Todas; choice of husband amongst Todas. Marshall, Mr., on the brain of a Bushwoman.
Domestic dogs can become, and again and again do become, wild, even consorting with wolves, interbreeding with them, assuming their gregarious habits, and changing the characteristic bark into a dismal wolf-like howl.
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