138 PRINCIPLES OF VETERINARY SCIENCE 



erable lymph to reduce friction. It is helpful to think of the 

 lymph as a central station or middleman between the blood and 

 the tissues. 



The presence of an excessive amount of lymph in a tissue 

 results in a cool swelling which pits on pressure, as there is no 

 circulatory movement in the lymph-spaces to force it along. 



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