. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 784 SPLEEN. Reptilia, amongst which I have only ex- amined Anguis fragilis and Coluber austriacus, I have seen no cells with unchanged blood globules ; but in the Anguis I found pale yel- low, brown, and black granule-cells, which were, as in birds, of from 6 to 10-1000ths of a line in diameter. Transitions of these into faintly yellowish and colourless granule-cells were also present in considerable number, being almost as frequent as the ordinary pa- renchyma cells in the spleen-pulp. The Co- luber austriacus certainly
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 784 SPLEEN. Reptilia, amongst which I have only ex- amined Anguis fragilis and Coluber austriacus, I have seen no cells with unchanged blood globules ; but in the Anguis I found pale yel- low, brown, and black granule-cells, which were, as in birds, of from 6 to 10-1000ths of a line in diameter. Transitions of these into faintly yellowish and colourless granule-cells were also present in considerable number, being almost as frequent as the ordinary pa- renchyma cells in the spleen-pulp. The Co- luber austriacus certainly exhibited an effu- sion of blood in the parenchyma of the spleen, but no changes of the blood corpuscles. The naked amphibia offered a striking contrast. Amongst them I examined Rana temporaria and escnlenta, Bombinator igneus, Hyla ar- borea, Bufo cinereus, Alytes obstetricans, Salamandra maculata and atra, Triton igneus, tasniatus, and cristatus. The cells with blood globules were-better seen in these than in anv other animals. This was especially the case in Triton, Bombinator, and Rana, in which 5, 10, 20, and more blood globules, with dis- tinct nuclei, were frequently seen occupying a plainly nucleated cell of 6 to 12-1000ths of a line in diameter. The size of the blood globules in these cases allowed their meta- morphoses to be followed through all stages, as is represented in Jig. 532. At first they were round, of an intense yellow, and less easily altered by water ; then they contracted themselves yet more together, assumed a golden yellow or brown yellow colour, and were no longer assailed by water ; finally, they became colourless, or experienced a transition into black granules, while they generally also fell asunder into smaller granules. In this manner golden and brownish yellow granule-cells (Jig. 532. 1.) arise from the cells with unchanged blood globules (fig. 532. 2, 3, 5.), and finally they experience a transition into colourless granule-cells (fig. 532. 4.
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