The Study of Animal Life
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In our eReader you can find the full English version of the book. Read The Study of Animal Life Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Study of Animal Life
What reading level is The Study of Animal Life book?
To quickly assess the difficulty of the text, read a short excerpt:
We may liken plants and animals to two analogous manufac- tories, both very complex ; we study the raw materials which pass in, many of the stages and by-products of manufacture, and the waste which is laid aside or thrown out, but in neither case can we enter the secret room where the mystery of the process is hidden.
In the pond we find the eggs of water-snails and water- insects attached to the floating leaves of plants ; in the ditches in spring we see in many places the abundant spawn of f...rogs and toads ; we are familiar with the heavily yolk-laden eggs of birds. Now, with a little care it is quite easy to convince ourselves that an egg or ovum is to begin with a simple mass of matter, in part, at least, alive, and that by division after division the egg gives rise to a young animal.
We are also well aware that in most cases the egg-cell, for cell it is, only begins to divide after it has been penetrated, and in some subtle way stimulated, by a male unit or sperm.
The great facts of individual history or development then are, the apparent simplicity in the beginning, the pre- liminary condition that the egg-cell be united with a male CHAP.
What to read after The Study of Animal Life?
You can find similar books in the "Read Also" column, or choose other free books by J Arthur John Arthur Thomson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
We may liken plants and animals to two analogous manufac- tories, both very complex ; we study the raw materials which pass in, many of the stages and by-products of manufacture, and the waste which is laid aside or thrown out, but in neither case can we enter the secret room where the mystery of the process is hidden.
In the pond we find the eggs of water-snails and water- insects attached to the floating leaves of plants ; in the ditches in spring we see in many places the abundant spawn of f...rogs and toads ; we are familiar with the heavily yolk-laden eggs of birds. Now, with a little care it is quite easy to convince ourselves that an egg or ovum is to begin with a simple mass of matter, in part, at least, alive, and that by division after division the egg gives rise to a young animal.
We are also well aware that in most cases the egg-cell, for cell it is, only begins to divide after it has been penetrated, and in some subtle way stimulated, by a male unit or sperm.
The great facts of individual history or development then are, the apparent simplicity in the beginning, the pre- liminary condition that the egg-cell be united with a male CHAP.
What to read after The Study of Animal Life?
You can find similar books in the "Read Also" column, or choose other free books by J Arthur John Arthur Thomson to read onlineMoreLess
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