The Penycuik ExperimentsA. and C. Black, 1899 - 177 стор. |
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Загальні терміни та фрази
animals Arabian horse arches believed birth blue bred breed breeders brown Burchell zebra Burchell's cervical stripes chestnut Clydesdale coat colour colt common zebra Crawshay's Zebra cross cross-bred croup dark Darwin digits distinct dorsal band embryo Equidæ evidence experiments female filly flank feather flank stripe Forest pony germ-cells germ-plasm grey Highland ponies hind quarters hinny Hipparion hock hoofs Iceland Iceland pony inbred inbreeding inches indistinct infection intercrossing intermediate leg stripes less remote ancestors long hairs Lord Morton's mare male mane markings mated Matopo mountain zebra Mulatto Mulatto's second foal mules nearly neck Norette offspring parents pigeons prepotency previous sire quagga recent Remus resemble result reversion Romulus shadow stripes Shetland pony shoulder stripe side skewbald skin Somali zebra species spots sterile tail telegony thoroughbred transverse varieties ventral band Weismann white fantail wild withers zebra hybrids zebra mare zebra sire zebra-ass hybrids zebra-like
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Сторінка 167 - ... fore-hand, are fewer and less apparent than those on the colt and filly. These circumstances may appear singular; but I think you will agree with me, that they are trifles compared with the extraordinary fact of so many striking features, which do not belong to the dam, being, in two successive instances, communicated through her to the progeny, not only of another sire, who also has them not, but of a sire belonging probably to another species ; for such we have very strong reason for supposing...
Сторінка 166 - I tried to breed from the male quagga and a young chestnut mare of seven-eighths Arabian blood, and which had never been bred from: the result was the production of a female hybrid, now five years old, and bearing, both in her form and in her colour, very decided indications of her mixed origin.
Сторінка xii - some of the hybrids in make and disposition strongly suggest their zebra sire, others their respective dams; but even the most zebra-like in form are utterly unlike their sire in their markings.
Сторінка 166 - The stripes of the colt are confined to the withers, and to the part of the neck next to them. Those on the filly cover nearly the whole of the neck and the back as far as the flanks. The colour of her coat on the neck adjoining to the mane is pale and approaching to dun, rendering the stripes there more conspicuous than those on the colt. The same pale tint appears in a less degree on the rump ; and in this circumstance of the dun tint also she resembles the quagga...
Сторінка 60 - ... real hybrid, or even than the quagga. One of the two colts had its neck and some other parts of its body plainly marked with stripes. Stripes on the body, not to mention those on the legs...
Сторінка lxiii - Hence it is conceivable, and indeed probable, that every part of the adult contains molecules, derived both from the male and from the female parent; and that, regarded as a mass of molecules, the entire organism may be compared to a web of which the warp is derived from the female and the woof from the male.
Сторінка 59 - Ouseley, and produced two colts by a black Arabian horse. These colts were partially dun-coloured, and were striped on the legs more plainly than the real hybrid, or even than the quagga.
Сторінка 170 - Agassiz believed in telegony. He was strongly of opinion — ' that the act of fecundation is not an act which is limited in its effect, but that it is an act which affects the whole system, the sexual system especially; and in the sexual system the ovary to be impregnated hereafter is so modified by the first act that later impregnations do not efface that first impression.
Сторінка 166 - They have the character of the Arabian breed as decidedly as can be expected where fifteen-sixteenths of the blood are Arabian, and they are fine specimens of that breed ; but, both in their colour and in the hair of their manes, they have a striking resemblance to the quagga.