108 



HANDBOOK OF PHYSIOLOGY. 



direction, and intertwine among the nerve-fibres and nerve-cells (fig. 115). 

 The neuro<*lia-cell differs in size and shape very much in different parts 



Fig. 115.-: 

 with their periphe 



.Neuroglia cells in the cord of an adult frog. (After ci. Sala.) A, Epenc 

 peripheral extremities atrophied and ramified; B, C, D, neuroglia cells in di 

 nigratign and separation from the ependymal canal; their central extremi 



grees of emigration and separation from the ependj 



phied and much contracted; their pe-ipheral extremity, on the other hand, is greatly < 



the ramifications of the latter terminating in conical buttons, /, end under the pia mater 



Ependyma cells 

 in different de- 

 extremity is atro- 



Fig. 116. Different types of neuroglia cells. (After v. Gehuchten.) b, Neuroglia cells of the 

 white substance, and c, of the gray substance of the cord of an embryo calf. 



