. The microscope and its revelations. Fie;. .i:»(l. Section of cheiTv-stnnr,cutting the cells transversely. FlG. >:!1. —Section of eoquillanut 111 the direction of thelung (liametiT of the cells. its simplest e .million such a deposit forms a thin uniform layerover the whole internal surface of 1 lie cellulose wall, scarcely detract-ing at all from its transparency, and chiefly distinguishable bv thedotted appearance which the membrane then presents (fig. 525. A).These dots, however, are not pores, as their aspect might naturallysuggest, bu1 are merely points at which the deposit is \\antim
. The microscope and its revelations. Fie;. .i:»(l. Section of cheiTv-stnnr,cutting the cells transversely. FlG. >:!1. —Section of eoquillanut 111 the direction of thelung (liametiT of the cells. its simplest e .million such a deposit forms a thin uniform layerover the whole internal surface of 1 lie cellulose wall, scarcely detract-ing at all from its transparency, and chiefly distinguishable bv thedotted appearance which the membrane then presents (fig. 525. A).These dots, however, are not pores, as their aspect might naturallysuggest, bu1 are merely points at which the deposit is \\ TISSUES OF PHANEROG-AMIA 693 that the original cell-wall there remains unthickened. A morecomplete consolidation of cellular tissue is effected by depositsof sclernr/en (a substance which, when separated from the resinousand other matters that are commonly associated with it, foundtn be allied in chemical composition to cellulose) in successivelayers, one within another (fig. 529, A), which present them-selves as concentr
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
