. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 110 Mr. E. A. Andrews on some the mass in the form of delicate flowing currents of living material that form filose pseudopodia. These thread-like processes have the power to unite with or separate from one another, to lengthen or to shorten, to become thick or thin, much as do the pseudopodia of Gromia. By means of such living material spun out from the cells all parts of the young organism are held together as one continuous mass of living matter^ the continuity being establ
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 110 Mr. E. A. Andrews on some the mass in the form of delicate flowing currents of living material that form filose pseudopodia. These thread-like processes have the power to unite with or separate from one another, to lengthen or to shorten, to become thick or thin, much as do the pseudopodia of Gromia. By means of such living material spun out from the cells all parts of the young organism are held together as one continuous mass of living matter^ the continuity being established as fast as cell-division tends to interrupt it. The polar bodies act like the cells of the cleaving egg, and from the first become organically continuous with the egg- cells by means of living threads spun out from the polar bodies and from the g,^^. In figure 1 the polar bodies are represented lying over the relatively large opening that leads into the cleavage cavity of Fio-. i;:>:--v; the many-celled blastula. This figure is from a camera- lucida sketch made in 1894 with Zeiss ocular 8, objective 2 millim., and draw-tube 170 millim., by G. F. Andrews, from the living blastula of the Asterias common at RoscofF, France. Under this magnification of more than one thousand. 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 London, Taylor and Francis, Ltd
Size: 1696px × 1473px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
