. Animal forms; a second book of zoology. Zoology. THE CCELENTERATES 39 anemones, described in the next section. In the course of time remarkable changes ensue, which first manifest them-. Fig. 22.—Stages in the development of a scyphozoan jelly-fish, a, the attached young, which in b has separated into a number of disks, each of which becomes a jelly-fish, c.—After Korschelt and Heider. selves in a series of grooves encircling the body. These grow deeper, and the body of the animal finally comes to resemble a pile of sau- cers with the edge of each developed into a number of lobes (Fig. 22, b
. Animal forms; a second book of zoology. Zoology. THE CCELENTERATES 39 anemones, described in the next section. In the course of time remarkable changes ensue, which first manifest them-. Fig. 22.—Stages in the development of a scyphozoan jelly-fish, a, the attached young, which in b has separated into a number of disks, each of which becomes a jelly-fish, c.—After Korschelt and Heider. selves in a series of grooves encircling the body. These grow deeper, and the body of the animal finally comes to resemble a pile of sau- cers with the edge of each developed into a number of lobes (Fig. 22, b). One after an- other each saucer, to preserve the simile, raises itself from the top of the pile and swims away, and is clearly seen to be a jelly-fish, though con- siderably unlike the adult. As growth pro- ceeds, however, it un- dergoes a series of transformations which result in the adult 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
