The Method of Darwin a Study in Scientific Method
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" The 1 Different Forms of Flowers, etc., pp. 18-24.
DEDUCTION. — ANTICIPATION. I43 several foregoing facts led me to try the effects of the two kinds of pollen on the stigmas of the two forms. " This " trial " consisted of a long series of experiments to establish the effects of legitimate and illegitimate unions of the two forms. The reward of this effort to establish the principle by physiological evi- dence is summed up in his own words : " From the facts now given the superiority of a legi...ti- mate over an illegitimate union admits of not the least doubt; and we have here a case to which no parallel exists in the vegetable, or indeed in the animal kingdom."^ It had long been known that if pollen from a distinct species is placed on the stigma of a plant, and afterwards (sometimes many hours afterwards) pollen from its own species is placed on the same stigma, the latter obliter- ates the effects of the former, and the plant will be fertilized by the pollen of its own species. He had shown that the two forms of flowers of the cowslip were beautifully adapted in structure for cross-fertilization, and that it was essential to the vigor of the species that there be cross-fertilization between the two forms, and -that cross-fertilization between flowers of the same form, or fertilization of a 1 Different Forms of Flowers, etc., p.
What to read after The Method of Darwin a Study in Scientific Method?
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To quickly assess the difficulty of the text, read a short excerpt:
" The 1 Different Forms of Flowers, etc., pp. 18-24.
DEDUCTION. — ANTICIPATION. I43 several foregoing facts led me to try the effects of the two kinds of pollen on the stigmas of the two forms. " This " trial " consisted of a long series of experiments to establish the effects of legitimate and illegitimate unions of the two forms. The reward of this effort to establish the principle by physiological evi- dence is summed up in his own words : " From the facts now given the superiority of a legi...ti- mate over an illegitimate union admits of not the least doubt; and we have here a case to which no parallel exists in the vegetable, or indeed in the animal kingdom."^ It had long been known that if pollen from a distinct species is placed on the stigma of a plant, and afterwards (sometimes many hours afterwards) pollen from its own species is placed on the same stigma, the latter obliter- ates the effects of the former, and the plant will be fertilized by the pollen of its own species. He had shown that the two forms of flowers of the cowslip were beautifully adapted in structure for cross-fertilization, and that it was essential to the vigor of the species that there be cross-fertilization between the two forms, and -that cross-fertilization between flowers of the same form, or fertilization of a 1 Different Forms of Flowers, etc., p.
What to read after The Method of Darwin a Study in Scientific Method?
You can find similar books in the "Read Also" column, or choose other free books by Frank Cramer to read onlineMoreLess
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