Naturales Curios Curiosities in Natural History Taken From Authentic Reports
Naturales Curios Curiosities in Natural History Taken From Authentic Reports
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If we cast our eye to the upper part of the stem, we see a material, made for the purpose, used in no other 51 class of animals, arid in no other part of birds ; tough, light, pliant, elastic. The pith, also, which feeds the feathers, is amongst animal sub- stances, sui generis; neither bone, flesh, mem- brane, nor tendon.
But the artificial part of a feather is the beard y or, as it is sometimes called, the vane. By the beards, are meant what are fastened on each side of the stem, and what con...stitute the breadth of the feather, what we usually strip off from one side or both, when we make a pen. The separate pieces, or lamina, of which the beard is composed, are called threads, sometimes fila- ments or rays. Now, the first thing which an attentive observer will remark is, how much stronger the beard of the feather shows itself to be when pressed in a direction perpendicular to its plane, than when rubbed, either up or down, in the line of the stem ; and he will soon discover the structure which occasions this difference, viz.
What to read after Naturales Curios Curiosities in Natural History Taken From Authentic Reports?
You can find similar books in the "Read Also" column, or choose other free books by Joseph Taylor to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If we cast our eye to the upper part of the stem, we see a material, made for the purpose, used in no other 51 class of animals, arid in no other part of birds ; tough, light, pliant, elastic. The pith, also, which feeds the feathers, is amongst animal sub- stances, sui generis; neither bone, flesh, mem- brane, nor tendon.
But the artificial part of a feather is the beard y or, as it is sometimes called, the vane. By the beards, are meant what are fastened on each side of the stem, and what con...stitute the breadth of the feather, what we usually strip off from one side or both, when we make a pen. The separate pieces, or lamina, of which the beard is composed, are called threads, sometimes fila- ments or rays. Now, the first thing which an attentive observer will remark is, how much stronger the beard of the feather shows itself to be when pressed in a direction perpendicular to its plane, than when rubbed, either up or down, in the line of the stem ; and he will soon discover the structure which occasions this difference, viz.
What to read after Naturales Curios Curiosities in Natural History Taken From Authentic Reports?
You can find similar books in the "Read Also" column, or choose other free books by Joseph Taylor to read onlineMoreLess
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