SECT. XXIII. 6. OF THE CIRCULATORY SYSTEM. 31 i 



fionedby the blood, or by its chemical flimulus; but 

 that by habit thefe are all become irritative motions ; 

 that is, fuch motions as do not affecl: the whole fyf- 

 tem, except when the veffcls are difeafed by inflam- 

 mation. 



SECT. 





