. The cell in development and inheritance. Cells. B Fig. 128. — Diagrams of reduction in the types represented by Thalassema (A) and Saia- mandra (B). In both the first division is heterotypical. The second division (6) is transverse in the first and longitudinal in the second. tive appearance of a longitudinal split, and are separated by the second division (following immediately upon the first without inter- vening resting stage). The latter is therefore a transverse division (Fig. 130). An essentially similar result, though less completely worked out, is independently reached by Bolles Lee
. The cell in development and inheritance. Cells. B Fig. 128. — Diagrams of reduction in the types represented by Thalassema (A) and Saia- mandra (B). In both the first division is heterotypical. The second division (6) is transverse in the first and longitudinal in the second. tive appearance of a longitudinal split, and are separated by the second division (following immediately upon the first without inter- vening resting stage). The latter is therefore a transverse division (Fig. 130). An essentially similar result, though less completely worked out, is independently reached by Bolles Lee ('97) in Helix; by Klinckowstrom ('97) in the turbellarian ProstJiecercBiis; and by Francotte ('97) and Van der Stricht ('98, i) in Thysansoon. Klinckow- strom shows that there is much variation in the way in w-hich the rings open out and break apart, though the result is the same in all. In case of the vertebrates, Flemming ('87) long since described and figured typical tetrads in the salamander, but regarded them as "; Vom Rath's later conclusion ('93, '95) that they are. 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcells, bookyear1911
