. Animal forms; a second book of zoology. Zoology. 88 ANIMAL FORMS into the large mantle cavity within the body, a set of valves prevents its exit through the same channels, and upon a vigorous contraction of the body walls the water is forced out rapidly through the small opening of the funnel, which. Fig. 52.—Cephalopoda. Lower figure, the devil-fish or octopus {Octopus punctatus). The upper figure represents the squid (Loligo pealii) swimming backward by driving a stream of water through the small tube slightly beneath the eyes. From life, one-third natural size. drives the animal backward
. Animal forms; a second book of zoology. Zoology. 88 ANIMAL FORMS into the large mantle cavity within the body, a set of valves prevents its exit through the same channels, and upon a vigorous contraction of the body walls the water is forced out rapidly through the small opening of the funnel, which. Fig. 52.—Cephalopoda. Lower figure, the devil-fish or octopus {Octopus punctatus). The upper figure represents the squid (Loligo pealii) swimming backward by driving a stream of water through the small tube slightly beneath the eyes. From life, one-third natural size. drives the animal backward after the fashion of an explod- ing sky-rocket. In this way they usually escape the fishes and whales that prey upon them, but an additional device lias been provided in the form of a sac within the body, whose inky contents may be liberated in such quantity as to cloud the water for a considerable distance, and thus enable them to slip away unseen into some place of safety. .Most of the cephalopods are further protected by their ability to assume, like the chameleon, the color of the object. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jordan, David Starr, 1851-1931; Heath, Harold, 1868- [from old catalog] joint author. New York, D. Appleton and company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
