LECTURE VI. 251 



seie surprisingly rapid growths take place 

 either naturally or in consequence of dis- 

 ease; yet at the very summit of the 

 growth, we must admit that there are 

 nerves, because there is feeling ; that there 

 are absorbing vessels, because there is ab- 

 sorption. Medicines imbibed from the 

 surface, are conveyed into the sanguiferous 

 system through the originally existing ab- 

 sorbent channels, and the blood is returned 

 in like manner from the summit of the 

 new-formed part, through the pre-existing 

 veins. The original structures must there- 

 fore have grown to the very summit of the 

 newly'produced substance, or similar parts 

 must have been formed in it and conjoined 

 with them. 



With regard to arteries in general, he says, 

 " That they have within themselves consider- 

 able powers of increase, both in magnitude 

 and length, as well as of producing new 

 shoots ; all which is evident at the time of 

 the formation of the new horns in the stag, 

 and also in utero-gestation. Such actions, 

 likewise, extend by sympathy to a con- 



