. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SPLEEN. 781 with the cells of the spleen vesicles ; the characteristic appearances of which are their Fig. Parenchyma-cells from the of the Ox, magnified 350 diameters. a, Smaller cells; b, cells of medium size; c, free nu- clei ; d, largest cells. roundness, their size — from 3 to 5-1000ths of a line — their paleness, and their dark nucleus (Jig. 530. b). On the other hand, smaller and larger corpuscles also occur in the spleen-pulp, which are never met with in the Malpighian corpuscles. The former are sma
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SPLEEN. 781 with the cells of the spleen vesicles ; the characteristic appearances of which are their Fig. Parenchyma-cells from the of the Ox, magnified 350 diameters. a, Smaller cells; b, cells of medium size; c, free nu- clei ; d, largest cells. roundness, their size — from 3 to 5-1000ths of a line — their paleness, and their dark nucleus (Jig. 530. b). On the other hand, smaller and larger corpuscles also occur in the spleen-pulp, which are never met with in the Malpighian corpuscles. The former are small round corpuscles, somewhat larger than blood globules. They are seen in one of two states : either they exhibit a membrane and nucleus inseparable from each other, and thus, apart from their colour and somewhat lighter outline, resemble blood globules ; or they are free nuclei, in which no nucleoli are visible. But only a few of these are free nuclei, for by the application of saliva or a little water a membrane starts into view, either completely enclosing them, or limited to one side (Jig. 530. a). The nuclei, which thus appear as something separate from the membrane, have always the dark appearance of those cells the two parts of which are inseparable from each other; so that the appearance of these latter would seem chiefly dependent on the nucleus. With these small and quasi-developing cells, one also meets with free nuclei; and careful manipulation of the preparation shows these to be in general more numerous than in the Malpighian cor- puscles (Jig. 530. c). The larger named cor- puscles are partly pale cells of 7-1000ths of a line in size, with one or two nuclei]; or granule- cells of 4 to 6-1000thsof a line, and which may be described as " the colourless granule- cells" (Jig. 530. d) : both of these are more frequent than in the Malpighian corpuscles. The spindle-shaped or fusiform cells which Hessling mentions do not belong to the normal constituents
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