The book of Nature Study volume 1
The book of Nature Study volume 1
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In our eReader you can find the full English version of the book. Read The book of Nature Study volume 1 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 book of Nature Study volume 1
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Where, however, the eggs are deposited in a more or less bulky nest the colours may often be relatively conspicuous, as in the blue eggs of the thrush and hedge-sparrow. But in these cases the pro- tective coloration is transferred to the exterior of the nest ; for unless this is rendered as inconspicuous as may be, no amount of protective coloration which the eggs might possess would be of any service.
When the eggs are laid in holes and other dimly lighted places the shells are white, and thi...s because eggs having coloured shells would inevitably be smashed sooner or later by the sitting bird, which, returning to the nest, would be unable to see the eggs in so uncertain a light, and would thus break them in the endeavour to settle down. White shells, on the contrary, in such a situation would be visible. That this is so is shown by the case of the puffin. This bird lays its eggs in a burrow, and the shell is white. But this whiteness is formed by a thick chalky layer which, on being scraped away, reveals a coloured shell.
What to read after The book of Nature Study volume 1?
You can find similar books in the "Read Also" column, or choose other free books by J B John Bretland Farmer to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Where, however, the eggs are deposited in a more or less bulky nest the colours may often be relatively conspicuous, as in the blue eggs of the thrush and hedge-sparrow. But in these cases the pro- tective coloration is transferred to the exterior of the nest ; for unless this is rendered as inconspicuous as may be, no amount of protective coloration which the eggs might possess would be of any service.
When the eggs are laid in holes and other dimly lighted places the shells are white, and thi...s because eggs having coloured shells would inevitably be smashed sooner or later by the sitting bird, which, returning to the nest, would be unable to see the eggs in so uncertain a light, and would thus break them in the endeavour to settle down. White shells, on the contrary, in such a situation would be visible. That this is so is shown by the case of the puffin. This bird lays its eggs in a burrow, and the shell is white. But this whiteness is formed by a thick chalky layer which, on being scraped away, reveals a coloured shell.
What to read after The book of Nature Study volume 1?
You can find similar books in the "Read Also" column, or choose other free books by J B John Bretland Farmer to read onlineMoreLess
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