14 Structure of Neurones in Nervous System of White Eat 



EXPLANATION OF THE PLATES 



PLATE XIII 



Fig. 1.— Spinal ganglion cell from a cervical ganglion of the adult white rat. Reddish- 

 brown (surrounding the cell-body) represents the capsule which is composed of connective 

 tissue. Several sheath-nuclei as well as a cross-section of a capillary containing the blood cor- 

 puscles are shown. Within the cell the larger red granules represent the neurosoraes, while the 

 smaller granules of the same color represent the cyto-microsomes. The nucleus which is rep- 

 resented also in red contains a single nucleolus (blue) and a large number of the oxyphile gran- 

 ules (red). Nissl bodies are represented in blue. The location of the axone hillock is indicated 

 by the absence of the Nissl bodies. 



Fig. 2. — A motor cell from the ventral horn of the spinal cord of the adult white rat. 

 Lighter red represents the body of the motor cell which contains a spherical nucleus (slightly 

 darker red) at the center. The dots of an intense red represent the neurosomes which form the 

 axone endings. They terminate on the surface of the cell-body. 



Fig. 3. — An olfactory glomerulus of the new-born white rat, having body-weight of 4.5 

 grams. Red lines represent the olfactory nerve-fibers, while the yellow lines represent the den- 

 dritic branches of the mitral cells.- The neuroglia nuclei are represented in blue. 



Fig. 4. — Cells from Cornu ammonis of the adult white rat. The larger cell (on the left 

 side) shows a mode of termination of axones which are composed of a large number of the neu- 

 rosomes. The small cell represents the internal structure of the cell-body. The neurosomes are 

 represented by red dots, while the nucleus in which is a single nucleolus (blue) and a large 

 number of the oxyphile granules (red) is outlined in red. Blue in the cytoplasm represents the 

 Nissl bodies. 



PLATE XIV 



Fig. 5. — The cerebellar cortex of the adult white rat. Purkinji cells and their dendrites 

 are represented in sepia. Nerve-fibers and neurosomes are represented in red. Nuclei in both 

 granular and molecular layers as well as the blood capillaries are represented with black. 



Fig. 6.— Cells from corpus trapezoideum of the young white rat having body- weight of 4.5 

 grams. Each nucleus contains a single nucleolus (blue) and a large number of the oxyphile 

 granules (red). Blue in the cytoplasm represents the Nissl bodies. Red lines (heavier) represent 

 the terminals of the axones while the lighter lines in the outside of the cell-bodies represent 

 either the neuroglia fibers or fine nerve-fibers. 



All the figures were drawn from restained preparations (see the technique in the text) 

 by free hand, using Obj. A X OC, 4, Zeiss, except Fig. 5, which has been drawn by using 

 Obj. 4, mm. X OC. 4, Zeiss. 



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