In the case of animals with separate sexes, In the case of animals with separate sexes, 1859 1860 1861 1866 1869 |
With animals, 1872 |
facility in preventing crosses is an important element
of success of success 1859 1860 1861 1866 1869 | of success 1872 |
in the formation of new races, — at least, in a country which is already stocked with other races. In this respect enclosure of the land plays a part. Wandering savages or the inhabitants of open plains rarely possess more than one breed of the same species. Pigeons can be mated for life, and this is a great convenience to the fancier, for thus many races may be
kept kept 1859 1860 |
improved and kept 1861 1866 1869 1872 |
true, though mingled in the same aviary; and this circumstance must have largely favoured the
improvement and improvement and 1859 1860 | improvement and 1861 1866 1869 1872 |
formation of new breeds. Pigeons, I may add, can be propagated in great numbers and at a very quick rate, and inferior birds may be freely rejected, as when killed they serve for food. On the other hand, cats, from their nocturnal rambling habits, cannot be
matched, matched, 1859 1860 | easily matched, 1861 1866 1869 1872 |
and, although so much valued by women and children, we
hardly ever hardly ever 1859 1860 1861 1866 1869 | rarely 1872 |
see a distinct breed
kept kept 1859 1860 1861 1866 1869 | long kept 1872 |
up; such breeds as we do sometimes see are almost always imported from some other
country, country, 1859 1860 | country. 1861 1866 1869 1872 |
often often 1859 1860 | often 1861 1866 1869 1872 |
from from 1859 1860 | from 1861 1866 1869 1872 |
islands. islands. 1859 1860 | islands. 1861 1866 1869 1872 |
Although I do not doubt that some domestic animals vary less than others, yet the rarity or absence of distinct breeds of the cat, the donkey, peacock, goose, &c., may be attributed in main part to selection not having been brought into play: in cats, from the difficulty in pairing
them; them; 1859 1860 1869 1872 | them: 1861 1866 |
in donkeys, from only a few being kept by poor people, and little attention paid to their breeding;
in in 1859 1860 |
for recently in certain parts of Spain and of the United States this animal has been surprisingly modified and improved by careful selection: in 1861 1866 1869 |
for recently in certain parts of Spain and of the United States this animal has been surprisingly modified and improved by careful selection; in 1872 |
peacocks, from not being very easily reared and a large stock not
kept; kept; 1859 1860 1872 | kept: 1861 1866 1869 |
in geese, from being valuable only for two purposes, food and feathers, and more especially from no pleasure having been felt in the display of distinct
breeds. breeds. 1859 1860 |
breeds; but the goose seems to have a singularly inflexible organisation. 1861 1866 1869 |
breeds; 1872 |
↑1 blocks not present in 1859 1860 1861 1866 1869; present in 1872 | but the goose, under the conditions to which it is exposed when domesticated, seems to have a singularly inflexible organisation, though it has varied to a slight extent, as I have elsewhere described.
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