. The cell in development and inheritance. Cells. B D. P Fig. 53. — Division of dispermic eggs in sea-urchin eggs, schematic. [BOVERI.] A. C. E. Eggs before division, showing various connections of the asters. B. D. F. Result- ing division in the three respective cases, showing cleavage only between centres connected by a spindle. physical or chemical effect of the centres, through which the amphias- ter primarily arises, may thus be variously disturbed or modified in later stages, and the crossing of the rays is therefore not necessarily fatal to the assumption of dynamic centres. Biitschli (
. The cell in development and inheritance. Cells. B D. P Fig. 53. — Division of dispermic eggs in sea-urchin eggs, schematic. [BOVERI.] A. C. E. Eggs before division, showing various connections of the asters. B. D. F. Result- ing division in the three respective cases, showing cleavage only between centres connected by a spindle. physical or chemical effect of the centres, through which the amphias- ter primarily arises, may thus be variously disturbed or modified in later stages, and the crossing of the rays is therefore not necessarily fatal to the assumption of dynamic centres. Biitschli ('92, '98) has, moreover, recently shown that a close sivmlacriim of the amphiaster, showing a distinct crossing of the rays, may be produced in an arti- ficial alveolar structure (coagulated gelatine) by tractive forces cen- pended in spirits of turpentine (a poor conductor) between two electric poles. This experi- ment, devised by Faraday, has recently been applied by Gallardo ('96, '97) to an analysis of the mitotic figure. ^ '96, p. 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
Size: 1609px × 1553px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectcells, bookyear1911
