Animal Life a First book of Zology
Animal Life a First book of Zology
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In our eReader you can find the full English version of the book. Read Animal Life a First book of Zology 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 Animal Life a First book of Zology
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Another type of devel- opment is illustrated in the sword-fish. The young has a bony head, bristling with spines. As it grows . Older the spines disappear, the skin grows smoother, and, finally, the bones of the upper jaw grow together, forming a prolonged sword, the teeth are lost and the fins become greatly modi- fied. Fig. 50 shows three of these stages of growth. The FIG. 50. Three stages in the development of the sword-fish (Xipfiias gladiu-s). A, very young ; b, older ; c, adult. Partly a...fter LUTKBN.
flounder or flat-fish (Fig. 51) when full grown lies flat on one side when swimming or when resting in the sand on the bottom of the sea. The eyes are both on the upper side of the body, and the lower side is blind and colorless. When the flounder is hatched it is a transparent fish, broad and flat, swimming vertically in the water, with an eye on each side. As its development (Fig. 52) goes on it rests itself obliquely on the bottom, the eye of the lower side turns upward, and as growth proceeds it passes gradually 100 ANIMAL LIFE around the forehead, its socket moving with it, until both eyes and sockets are transferred by twisting of the skull to FIG.
What to read after Animal Life a First book of Zology?
You can find similar books in the "Read Also" column, or choose other free books by Jordan David Starr to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Another type of devel- opment is illustrated in the sword-fish. The young has a bony head, bristling with spines. As it grows . Older the spines disappear, the skin grows smoother, and, finally, the bones of the upper jaw grow together, forming a prolonged sword, the teeth are lost and the fins become greatly modi- fied. Fig. 50 shows three of these stages of growth. The FIG. 50. Three stages in the development of the sword-fish (Xipfiias gladiu-s). A, very young ; b, older ; c, adult. Partly a...fter LUTKBN.
flounder or flat-fish (Fig. 51) when full grown lies flat on one side when swimming or when resting in the sand on the bottom of the sea. The eyes are both on the upper side of the body, and the lower side is blind and colorless. When the flounder is hatched it is a transparent fish, broad and flat, swimming vertically in the water, with an eye on each side. As its development (Fig. 52) goes on it rests itself obliquely on the bottom, the eye of the lower side turns upward, and as growth proceeds it passes gradually 100 ANIMAL LIFE around the forehead, its socket moving with it, until both eyes and sockets are transferred by twisting of the skull to FIG.
What to read after Animal Life a First book of Zology?
You can find similar books in the "Read Also" column, or choose other free books by Jordan David Starr to read onlineMoreLess
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