356 



PRACTICAL HISTOLOGY. 



[XXXI. 



sation of the axis-cylinder processes of nerve-cells lying in the molecular 



layer of the grey matter. 

 The dendrites are in part 

 also invested by a basket- 

 work due to the arborisa- 

 tion of fibres proceeding 

 from the medulla i,c., 

 fibres which do not ter- 

 minate in the cells of 

 Purkinje. Some of the 

 cells of the granular 

 layer are nerve-cells with 

 protoplasmic and axis- 

 cylinder processes. The 

 small nerve-cells, by far 

 the most numerous, give 

 axis - cylinder processes 

 which run out into the 

 molecular layer, where 

 they divide and become 

 continuous with a fibre 

 running at right angles 

 to it. In the molecular 

 layer there is an arrange- 

 ment of nerve-fibres run- 



Fia. 330. Cell of Purkinje. Corrosive sublimate. A. Seen wing more or less parallel 

 on the flat, and B, from the side, x 120. to the surface of the 



leaflets, and joined here 



and there by the axis-cylinder processes of the nerve-cells of the granular 



Kia. 331. Scheme of T.S. of Cerebrum of New-born Rat, prepared by Cayal's Double- 

 impregnation Method. ^.Corpus callosum ; e. Lateral ventricle ; B. antero-posterior, 

 or association fibres arising from large pyramidal cells ; a. Large pyramidal cells whose 

 axis-cylinder processes pass into the antero-posterior layer; b. Fibre of corpus cal- 

 losum bifurcating ; c. Callosal fibre ; d. Callosal fibre arising from a pyramidal cell ; 

 e. Axis-cylinder process descending obliquely to enter the corpus callosum ; /. Final 

 ramification of a callosal fibre in the grey matter of the cortex ; h. Collateral fibre 

 from a large pyramidal cell ; i. Fusiform cells with axis-cylinder processes passing into 

 outer layer of cortex ; j. Final ramification of a callosal fibre arising in opposite side 

 of cortex. 



