Natural History
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In our eReader you can find the full English version of the book. Read Natural History 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 Natural History
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The young are hatched in a fully- developed state, and undergo no metamorphosis. In the members of the typical genus Myxiiic there is only one gill-aperture on each side of the body, but this gives rise to six ducts leading to the gill-pouches. On the other hand, in the genus Bdellostoma each of the six or more gill-pouches com- municates directly with the exterior by a separate aperture. Whereas the members of the first genus have a wide geographical range, the two repre- sentatives of the sec...ond appear to be confined to the coasts of the South Pacific. All are exclusively marine, and they have been taken at great depths. They are blind, and to a large extent parasitic, so that they may be regarded as degraded types ; and they have the habit of secreting a vast quantity of stiff slime. Like the lampreys, they feed on the flesh of fishes, the various members of the cod tribe being their especial favourites. They do not, however, content themselves by hanging on to the surface of the body, for which the structure of the mouth is less suited, but actually bore their way into the flesh of their unwilling hosts.
What to read after Natural History?
You can find similar books in the "Read Also" column, or choose other free books by Kirkpatrick, R. (Randolph), B. 1863 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The young are hatched in a fully- developed state, and undergo no metamorphosis. In the members of the typical genus Myxiiic there is only one gill-aperture on each side of the body, but this gives rise to six ducts leading to the gill-pouches. On the other hand, in the genus Bdellostoma each of the six or more gill-pouches com- municates directly with the exterior by a separate aperture. Whereas the members of the first genus have a wide geographical range, the two repre- sentatives of the sec...ond appear to be confined to the coasts of the South Pacific. All are exclusively marine, and they have been taken at great depths. They are blind, and to a large extent parasitic, so that they may be regarded as degraded types ; and they have the habit of secreting a vast quantity of stiff slime. Like the lampreys, they feed on the flesh of fishes, the various members of the cod tribe being their especial favourites. They do not, however, content themselves by hanging on to the surface of the body, for which the structure of the mouth is less suited, but actually bore their way into the flesh of their unwilling hosts.
What to read after Natural History?
You can find similar books in the "Read Also" column, or choose other free books by Kirkpatrick, R. (Randolph), B. 1863 to read onlineMoreLess
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