This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1873 Excerpt: ...the embryo-sac is found the germinal vesicle. The germinal vesicle is the rudiment of the future plant. The stamens, or stalks, surrounding the pistil, are composed of the stems or filaments supporting the anthers or little heads. The anthers contain the pollen, or fertilizing principle. Suppose the supreme power of ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1873 Excerpt: ...the embryo-sac is found the germinal vesicle. The germinal vesicle is the rudiment of the future plant. The stamens, or stalks, surrounding the pistil, are composed of the stems or filaments supporting the anthers or little heads. The anthers contain the pollen, or fertilizing principle. Suppose the supreme power of Turkey to be a woman, and the Sultana to have a harem of men, such a condition of social life would represent what is seen in the Violet, or better in a section of the Morning-glory (Fig. 131), where the imaginary Sultana is realized in the pistil, the harem of men in the stamens. The pollen produced in the anthers finds its way to the stigma, or head of the pistil; from the head it passes down through the style, or tube of the pistil, until it reaches the ovary. Piercing successively the ovary, ovule, and embryosac, it finally comes in contact with the germinal vesicle. From this moment the life of the new plant begins in the formation of the embryo. The flowers of the Violet and Morning-glory serve to illustrate the reproductive apparatus of many plants. If, however, the flower of the Goose-foot (Chenopodium) (Fig. 133) be compared with that of the Violet, the absence of the corolla at once strikes the attention; and if the flowers of the Bread-tree, Pine, etc. (Fig. I3S, a be now examined, calyx and corolla are both found wanting. Further, in trees like the Pine, etc. there is no ovary, the ovule being exposed to view resting on the edge of the leaf (Fig. 135, a); the ovule is fertilized by the falling of the pollen, style and stigma being absent as well as ovary. Plants of this kind are called, therefore, Gymnospermse, or naked seeds; whereas those having an ovary are known as Angiospermae, or seed-vessels. The flower, ing plants divide natur..
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