3 o 4 DISEASES ^SECT. XXXII. n. i, 



digeftion from the want of food, which is termed hunger ; both 

 arife from the inactivity of thole vefiels, which ought to be either 

 perpetually, or at periodical times ftimulated into action. See 

 Sect. XIII. 3. 2. And the ftiivering or actions of the fubcuta- 

 neous mufcles, when we are cold, are in confequence of the 

 pain, or voluntary exertion to relieve that pain, and originate 

 from the want of ftimulus, not from the excefs of it. 



In this age of reafon it is not the opinions of others, but the 

 natural phenomena, on which thofe opinions are founded, 

 which deferve to be canvafled. And with the fuppofed exift- 

 ence of ghofts or apparitions, witchcraft, vampyrifm, aftrology, 

 animal magnetifm, and American tractors, fuch theories as the 

 above muft vanifh like the fcenery of a dream j as they confift 

 of fuch combinations of ideas, as have no prototype or corref- 

 pondent combinations of material objects exifting in nature. 



SECT, 



