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Updated: May 25, 2025
If no advantageous offer be made, the development should continue and the plant should be dedicated primarily to the production of materials for the fertilization of the soil. The railways during the past year have made still further progress in recuperation from the war, with large rains in efficiency and ability expeditiously to handle the traffic of the country.
Putting this in the terminology of to-day, and limiting it to the occurrence of only one differential unit in the parents, we may give it in the following manner. In fertilization, the characters of both parents are not uniformly mixed, but remain separated though most intimately combined in the hybrid throughout life.
They aid in the fertilization of flowers, thus preventing the occurrence of sterile flowers, and, by more thoroughly fertilizing flowers already perfect, render the production of sound and well developed fruit more sure. Many botanists think if it were not for bees, and other insects, many plants would not bear fruit at all.
For this optional fertilization, determining the sex, the mother's organism requires a seminal reservoir which distils its drop of sperm upon the egg contained in the oviduct and thus gives it a feminine character, or else leaves it its original character, the male character, by refusing it that baptism. This reservoir exists in the Hive-bee.
Summarizing this discussion we may conclude that in normal fertilization and in the inter-crossing of varieties all characters are paired, while in crosses between elementary species the differentiating marks are not mated. In order to distinguish these two great types of fertilization we will use the term bisexual for the one and unisexual for the other.
Fertilization of plants has been thought to have been known in the oldest times, and there are some who believe that the library at Alexandria must have contained some information relative to it. The first authentic account that we have of artificial impregnation is that of Schwammerdam, who in 1680 attempted it without success by the fecundation of the eggs of fish.
When the crimson threads appear in the scaly buds the staminate catkins are lengthening, and soon the high wind shakes the golden pollen over all the copse. These flowers which appear before the leaves all depend upon the wind for their fertilization. That is why they come before the leaves. And there is always wind enough to meet all their needs. March is a masculine month.
The snow was beating against the windows, the sea was moaning, the wind blew furiously round the house, which seemed like a ship in a terrible storm. We drank to the fertilization of the dunes, to the victors of Achen, to the prosperity of the colonies, to the memory of Nino Bixio, to the elves. Nevertheless, I was still a little uneasy.
Hardy's "Tess of the D'Ubervilles": "Amid the oozing fatness and warm ferments of Froom Vale, at a season when the rush of juices could almost be heard below the hiss of fertilization, it was impossible that the most fanciful love should not grow passionate. The ready hearts existing there were impregnated by their surroundings."
Resting spores produced after fertilization either by conjugation or impregnation. 2. Spermatozoids. 3. Zeospores; 2, 4, or multiciliated active automobile cells gonidia discharged from the mother cells or plants without impregnation, and germinating directly. There is also another increase by cell division. Lemaneae.
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