76 



CELL DIFFERENTIATION AND THE ELEMENTARY TISSUES 



The Corpuscles of Golgi. These are small terminal plaques placed 

 at the union of tendons and muscles, but belonging more properly to the 



FIG. 105. Neuroglia Cells in the Cord of an Adult Frog. (After Cl. Sala.) A, Ependyma 

 cells with their peripheral extremities atrophied and ramified; B, C, D, neuroglia cells in different 

 degrees of emigration and separation from the ependymal canal; their central extremity is atro- 

 phied and much contracted; their peripheral extremity, on the other hand, is greatly extended; 

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



FIG. 106. Different Types of Neuroglia Cells. (After Van Gehuchten.) b, Neuroglia cells of 

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



