114 



THE FROG 



CHAP. 



composed of a sort of irregular network of delicate 

 bundles of wavy fibres called white connective-tissue fibres 

 (Fig. 33, w), which cross one another in all directions. 

 Amongst them are found single fibres sweeping across 

 the field in bold curves and called elastic fibres (e) : it is 



FIG. 33. Connective-tissue from between muscles of the Frog's legs. ( x about 200.) 



c. cells ; e. elastic fibres ; w. white fibres : all of which are imbedded in a delicate 



matrix not specially indicated in the figure. 



owing to their elasticity that the tissue cannot be spread 

 out when wet. Scattered among the fibres are numer- 

 ous nucleated cells (c) of very varied and often irregular 

 form : these are the connective-tissue cells. The fibres, as 

 well as the cells, are imbedded in a soft, homogeneous, ; 

 ground substance or matrix. 



