168 



THE FROG 



fHAP. 



direction ; the grey matter contains numerous " multi- 

 polar" nerve-cells, each giving off numerous dendrons 



FIG. 54. A, nerve-cell from the grey matter of the spinal cord of a Pros, and the 

 nerve-fibre arising from it (neurolemma not shown) ; 13, cell from the ganglion of 

 a dorsal root, (x about 200.) 



ne. neurolemma; nu. nucleus ; nr. ncuraxis ; ms. medullary sheath. (After 

 Howes.) 



and one axon, which is continuous with a neuraxis 

 (Figs. 48 and 54, ,A) ; they are enclosed in a tissue 

 formed partly of the axis-fibres of nerves which enter 



