. The doctrine of descent and Darwinism. Evolution. ALTERNATE GENERATION. 43 afflicted with tape-worm, issue so-called somites or seg- ments of the tape-worm. These somites are usually filled with such an extraordinary number of ova that they seem like mere packets of eggs. It appears, how-. FIG. 3. ever, from the evolutionary history of the tape-worm, and its relations with other annulosa, namely with leeches and Turbellaria, that notwithstanding their in- completeness and deficiency of organs, these somites are equivalent to sexually mature individuals ; or, according to Haeckel's definition


. The doctrine of descent and Darwinism. Evolution. ALTERNATE GENERATION. 43 afflicted with tape-worm, issue so-called somites or seg- ments of the tape-worm. These somites are usually filled with such an extraordinary number of ova that they seem like mere packets of eggs. It appears, how-. FIG. 3. ever, from the evolutionary history of the tape-worm, and its relations with other annulosa, namely with leeches and Turbellaria, that notwithstanding their in- completeness and deficiency of organs, these somites are equivalent to sexually mature individuals ; or, according to Haeckel's definition, are endowed with personality. If the tape-worm now comported itself like most other animals, somites would be directly developed from its eggs. But to this there is a very circuitous 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 Schmidt, Dr. (Eduard Oskar), 1823-1886. New York, D. Appleton


Size: 1487px × 1680px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorschmidtd, bookcentury1800, bookdecade1890, bookyear1896