...Traherne Moggridge) that with hybrid Cisti the ovarium is frequently deformed, the ovules being in some cases quite absent, and in other cases incapable of fertilisation...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... purpureus, and was probably fertilised by it, through the agency of insects (for these, as I know by experiment, play an important part in the fertilisation of the laburnum), the sterile hybrid C...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...That the action is anomalous in appearance is true, but hardly so in reality, for apparently it plays the same part in the ordinary fertilisation of many flowers...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Here it is evidently nature's wish, in the interests of crossed fertilisation, that the union of the drone and the queen-bee should be possible only in the open sky...
Maurice Maeterlinck 「The Life of the Bee」
...Her concern, as we have said, was merely to improve the race by means of crossed fertilisation...
Maurice Maeterlinck 「The Life of the Bee」
...After fertilisation, the couple, as is rarely found among fish, remain in the neighbourhood of their offspring to assist them if necessary...
Frédéric Houssay 「The Industries of Animals」
...The fertilisation took place in spring...
Sir James George Frazer 「The Golden Bough」
...These ova that do notneed fertilisation are called “false ova,” pseudova or spores...
Ernst Haeckel 「The Evolution of Man」
...In many of thelower animals the ovum retains its original naked form until fertilisation,develops no membranes, and is then often indistinguishable from the ordinaryamœba...
Ernst Haeckel 「The Evolution of Man」
...The process of fertilisation by sexual conception consists, therefore,essentially in the coalescence and fusing together of two different cells...
Ernst Haeckel 「The Evolution of Man」
...23—The fertilisation of the ovum by thespermatozoon (of a mammal)...
Ernst Haeckel 「The Evolution of Man」
...In all these animals the mature ovum, and thestem-cell that arises from it in fertilisation, consist of two different andseparate parts, which we have called formative yelk and nutritive yelk...
Ernst Haeckel 「The Evolution of Man」
...When the fertilisation of the bird’s ovum has taken place within themother’s body, we find in the lens-shaped stem-cell the progress of flat,discoid segmentation (Fig...
Ernst Haeckel 「The Evolution of Man」
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