Tylor, Alfred, 1824-1884, Skertchly, Sydney B. J · London, Alabaster, Passmore · leaf 120
t of favourable cases, for these animalspossess a sort of backbone—the well-known cuttle-bone—and hencethey have a dorsal line. Some shells, as Margarita catenata, have a chain-pattern, and inthis case the action of the pigment cells takes place at regular andshort intervals. Others, as Mactra… … CHAPTER XIV.Colouration of Vertebrata. THE vertebrata, as their name iraplies, are distinguished by thepossession of an internal skeleton, of which the backbone is themost essential part, and the general, but not universal, possession oflimbs or appendages. Consequently we find that the dorsal and…
Animals · Color of insects · Flowers · Plants
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