CONNECTIVE TISSUE. 



55 



tissue (see below). These bundles are joined together by a 

 cement substance, which is soluble in lime-water, baryta-water, 

 or in a saturated aqueous solution of picric acid. The fibrils 

 themselves never divide but the bundles may branch dichoto- 



FIG. 28. 



Connect ire f'* 

 tissue cells "i 



' 



Reticulum of cat's lymph gland, showing leucocytes and connective-tissue cells in its 



mesiies. - -l.'JO. 



mously. The fibrils swell in acetic acid, and in solutions of 

 sodium and potassium hydroxide, and are dissolved by boiling 

 in dilute acids or in dilute potash. In pepsin they are digested 

 easily, in pancreatin not. 



FIG. 29. 



Connective 

 tissue cell 



Wandering 



cell 



Elastic fibre 



Fibrils of white/ 

 fibrous connec- * 

 five tissne\: 



Areolar connective tissue from the subcutis of a rat. X 300. 



((3) Elastic fibres are found in areolar tissue in smaller 

 quantities than the fibrils of the white fibrous tissue. They 

 may be of different thicknesses, but always run singly without 

 forming bundles. They often divide dichotomously (Fig. 29) 



