150 



THE CIRCULATION OF THE BLOOD 



readily absorb what they need. Secondly, it takes away 

 some of the waste products from the active tissues. This 

 it accomplishes in part by the activity of the white 



Lymphatic 

 ducts 

 supplying 

 gland 

 Lymph gland 



Lymphatic ducts 

 draining gland 



Nodes of ducts (valves) 



FIG. 91. Lymph gland and connected lymphatics. 



corpuscles which are carried about in it and are 

 thereby enabled thoroughly to explore the tissues of the 

 body. 



Lymph glands. The work of drainage is further ac- 

 complished by the establishment of filtering stations 

 called lymph glands. The lymph glands vary in size 

 from a hemp seed to a bean and are scattered at various 

 points along the lymph canals. They are made up of 



