i32 LECTURE V. 



He then divided the mesentery at the edge 

 next the intestine, where the vessels being 

 larger, the water ran rapidly from them ; 

 and when he opened a vessel of consider- 

 able size, it gushed from it with the same 

 velocity and force that blood issues from the 

 same sized vessel when divided in a living 

 animal. I refer you to this experiment, be- 

 cause it seems far better calculated to dis- 

 play the effects likely to result from the 

 circumstances we observe in the distribution 

 and ramification of arteries, than any we may 

 make with tubes of our own construction. 



Mr. Hunter was convinced that arteries 

 terminate in veins ; for if we inject the for- 

 mer with any subtile fluid, it quickly and 

 freely returns by the latter. I know not, 

 however, whether the magnitude of some 

 of the communicating tubes was ascertained 

 till of late years. I have in my possession 

 a hand which was injected with wax about 

 thirty years ago, and the wax passed freely 

 from the arteries into the veins, so as to 

 afford a beautiful exhibition of the network 

 of small veins, which proceed to terminate 



