SECT. XXI 3. OF DRUNKENNESS. 285 



bufinefs, or by the exertion of volition, we prevent 

 the approaches of it, and continue to take into our 

 flomach greater quantities of the inebriating mate- 

 rials. By thefe means the irritative movements of the 

 flomach are excited into greater action than is natu- 

 ral : and in confequence all the irritative tribes and 

 trains of motion, which are catenated with them, 

 become fufceptible of flronger action from their ac- 

 cuflomed ftimuli ; becaufe thefe morions are excited 

 both by their ufual irritation, and by their aifocia- 

 tion with the increafed actions of the ftomach and 

 lacteals. Hence the (kin glows, and the heat of the 

 body is increafed, by the more energetic action of 

 the whole glandular fyftem ; and pleafure is intro- 

 duced in confequence of thefe increafed motions 

 from internal flimulus. According to Law 5. Sect. 

 IV. on Animal Caufation. 



From this great increafe of irritative motions from, 

 internal flimulus, and the increafed fenfation intro- 

 duced into the fyftem in confequence ; and fecondly, 

 from the increafed fenfitive motions in confequence 

 of this additional quantity of fenfation, fo much 

 fenforial power is expended, that the voluntary power 

 becomes feebly exerted, and the irritation from the 

 flimulus of external objects is lefs forcible ; the ex- 

 ternal parts of the eye are not therefore voluntarily- 

 adapted to the diftances of objects, whence the ap- 

 parent motions of thole objects either are feen dou- 

 ble, or become too indiftinct for the purpofe of ba- 

 lancing the body, and vertigo is induced. 



Hence we become acquainted with that very cu- 

 rious circumflance, why the drunken vertigo is at- 

 tended with an increafe of pleafure -, for the irritative 

 ideas and motions occaficned by internal ftimulus, 

 that were not attended to in our fober hours, are 

 now juft fo much increafed as to be fucceeded by 

 pleafurable fenfation, in the fame manner as the 

 more violent motions of our organs are fucceeded by 



U a painful 





