33* DISEASES Sect. XXXIV. 2. j. 



generally the firfl fymptom, and want of (hame, and want of 

 delicacy about c lean line fs. Suspicion is a voluntary exertion of 

 the mind arifing from the pain of fear, which it is exerted to 

 relieve : fliame is the name of a peculiar difagreeable fenfation, 

 fee Fable cf the Bees, and delicacy about cleaniinefs arifes from 

 another difagreeable fenfation. And therefore are not found in. 

 the minds of maniacs, which are employed folely in voluntary 

 exerticii3. Hence the molt modeft women in this difeafe walk, 

 naked amongft men without any kind of concern, ufe obfeene 

 difcourfe, and have no delicacy about their natural evacuations. 



5. Nor are maniacal people more attentive to their natural 

 appetites, or to the irritations which furround them, except as far 

 as may refpect their fufpicions or defigns ; for the violent and 

 perpetual exertions of their voluntary powers of mind prevent 

 their perception of almoft every other object, either of irritation 

 or of fenfation. Hence it is that they bear cold, hunger, and fa- 

 tigue, with much greater pertinacity than in their fober hours, and 

 are lefs injured by them in refpett to their general health. Thus 

 it is allerted by hiftorians, that Charles the Twelfth of Sweden 

 llept on the fuow, wrapped only in his cloak, at the fiege of 

 Frederick (tad, and bore extremes of cold and hunger, and fatigue, 

 under which numbers of his foldiers periihed ; becaufe the king 

 was infane with ambition, but the foldier had no fuch powerful 

 stimulus to preferve his fyttem from debility and death. 



(5. Betides the insanities ariiing from exertions in eonfequence 

 of pain, there is alfo a pieafurable infinity, as well as a pleafura- 

 ble delirium ; as the infanity of perfonal vanity, and that of re- 

 ligious fanaticifm. When agreeable ideas excite into motion th 

 fenforial power of fenfation, and this again caufes other trains of 

 agreeable ideas, a coniiant dream of pieafurable ideas fucceeds> 

 and produces pieafurable delirium. So when the fenforial power 

 of volition excites agreeable ideas, and the pleafure thus produ- 

 ced excites more volition in its turn, a confeant flow of agreea- 

 ble voluntary ideas fucce,eds ; which when thus exerted in the 

 extreme conuitutes infanity. 



Thus when our mufcular aclions are excited by our fenfations 

 of pieafure, it is termed play •, when they are excited by our 

 volition, it is termed work ; and the former of thefe is attended 

 with lei's fatigue, becaufe the mufcular actions in play produce 

 in their turn more pieafurable fenfation -> which again has the 

 property of producing more mufcular action. An agreeable in- 

 iLmcc o'r this I law this morning. A little boy, who was tired 

 with w.\ ed of his p;ipa to carry him. " Here," fays 



tint reverend doctor, " ride upon my gold-headed cane ;" and 

 the plea-fed child, putting it between his \egz y gallopped away 



with 



