158 ANIMAL PHYSIOLOGY. 



vessels. Yet, when it is considered that lymphatics at their 

 origin are less distinctly bounded than the capillary blood- 

 vessels, and much more closely communicate with the fluids 

 of the tissues, it seems not improbable that, as has been 

 suggested, the crystalloids are principally taken into the 

 blood, while the colloids left behind are carried away by the 

 lymphatics. 



