American journal of pharmacy . The cells are polygonal isodiametric, 434 Anatomy of Edible Berries. { Am. Jour. , 1904. from 0008 to o*020 millimeter in diameter. The monoclinic crystalsare always simple, and are especially striking when illuminated withpolarized light. The diameter of each crystal is about half that ofthe cell in which it is contained, (4) Outer Endocarp {Fig. ?, If).—This layer, forming the largerpart of the pericarp, is made up of fiv^e or more thicknesses ofsclerenchymatous fibers longitudinally arranged. As seen in crosssection, the cell walls are about as
American journal of pharmacy . The cells are polygonal isodiametric, 434 Anatomy of Edible Berries. { Am. Jour. , 1904. from 0008 to o*020 millimeter in diameter. The monoclinic crystalsare always simple, and are especially striking when illuminated withpolarized light. The diameter of each crystal is about half that ofthe cell in which it is contained, (4) Outer Endocarp {Fig. ?, If).—This layer, forming the largerpart of the pericarp, is made up of fiv^e or more thicknesses ofsclerenchymatous fibers longitudinally arranged. As seen in crosssection, the cell walls are about as thick as the diameter of thelumen. The pores are clearly evident in longitudinal section. (5) The Inner Endocarp {Fig. j, qf) consists of the same elementsas the outer endocarp, but is only one or two cell layers thick, andthe cells are arranged transversely. On the dorsal side some ofthe fibers of this layer extend radially through the outer endocarp,thus facilitating the rupture of the pericarp during sprouting. f^^B^^ Fig. 4.—Strawberry testa and endosperm in surface view. Signification ofletters same as in Fig. 3. X 300. Testa.—(l) The Epidermis {Figs, j and ^, ep) is made up of thin-walled cells, which in surface view are polygonal, in section quadrilat-eral. The cell walls are exceedingly thin, but are strengthened bythickened bands, resembling those of spiral and recticulated differ, however, from the latter in that they do not pass com-pletely around the cell, but are wanting on the outer surface, sothat in mounting a preparation the outer wall often collapses and theside walls fall down, presenting the appearance shown in Fig. layer is difficult to make out in cross section, but is readilystudied in surface view. (2) Brown Layer {Figs, j and ^, br).—The second layer of thetesta is composed of elongated brown cells, which pass transverselyabout the seed. Transverse sections of these cells are quadrilateral, Am. Jour. Pharm,September, 1
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