Disease Germs: Their Supposed Nature: An Original Investigation, With ...
Disease Germs: Their Supposed Nature: An Original Investigation, With ...
Lionel S Lionel Smith Beale
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8, plate I. The material of which the cell wall consists (formed material) passes gradually into the germinal matter, when the plant is germinating quickly, and the abrupt line, which marks the internal boundary of the cap- sule in many specimens, is absent. These points are given in the drawings, Figs. 7 and 8, the latter in which the formed material is made too thick, taken from a specimen magnified by the fiftieth. Where growth is active, the yeast cells are em- bedded in a soft material con...tinuous with the external surface of the envelope, as represented around the yeast particles in the central part of Fig. 8. This probably consists partly of matter which is drawn towards the surface of the cells by the currents of fluid which are setting towards the germinal matter within, and partly of imperfectly hardened formed material. Thus there always appears to be a space between the outer part of one and the outer parts of neighbouring cells. The very soft material, which consists of imperfectly formed matter, that by gradual condensation as- sumes all the characters of the cellulose wall of the yeast particle, corresponds to the mucus which lies between the particles of bioplasm concerned in the for- mation of that substance, and bears the same relation to the envelope of the yeast cell as the viscid mucus does to the wall of an epithelial cell embedded in it.
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