...This sheep has bred freely in the Zoological Society's Gardens, andtwo hybrids have been born there from a male of this species and theCorsican mouflon, Ovis musimon... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Further division of contrasting antigens in species hybrids in ducks...
William B. Stallcup 「Myology and Serology of the Avian Family Fringillidae」
..." In Hungary, Jeitteles was assured on trustworthy authority that a wild male cat crossed with a female domestic cat, and that the hybrids long lived in a domesticated state...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...caffra; he has seen a pair of hybrids which were quite tame and particularly attached to the lady who brought them up; and Mr...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Out of 500 eggs, raised from various first crosses and hybrids, between G...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Although they do not resemble the hybrids which have been raised between P...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...That there must be at least two parent-species we may infer from the sterility of twenty hybrids raised by Mr...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...In both these hybrids, the ovules, as observed by Prof...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... Naudin raised forty hybrids from Datura lævis fertilised by D...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...With respect to the extraordinary tendency which this tree exhibits to complete or partial reversion, we have seen that undoubted seminal hybrids and mongrels are similarly liable...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...For the feral hybrids of the common and musk-ducks, see Audubon's 'American Ornithology,' and Selys-Longchamp's 'Hybrides dans la Famille des Anatides...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...At Paris, hybrids have been raised (Isid...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... These hybrids have been described by M...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Theseearly sports of the old Florida are most grown, but the Chinese velvetbean, introduced by the Department, and the hybrids developed by theFlorida Experiment Station, are important...
Florida State Live Stock Association 「Florida: An Ideal Cattle State」
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