. 2. CATENATION OF MOTIONS. 23; 



them begin to ceafe to be eafily recollected, fhc 

 finds progreffive trains of mufical notes more fre- 

 quently forgotten, than thofe which are compofed 

 of reiterated circles, according with the eleventh 

 preceding article. 



12. To finifh our example with the preceding ar- 

 ticles we muft at length fuppofe, that our fair per- 

 former falls afleep over her harpfichord ; and thus 

 by the fufpenfion of volition, and the exclufion of 

 external ftimuli, fhe diflevers the trains and circles 

 of her muficai exertions. 



III. i. Many of thefe circumftances of catenati- 

 ons of motions receive an eafy explanation from the 

 four following confequences to the feventh law of 

 animal caufation in Seel. IV. Thefe are, firft, that 

 thofe fucceflions or combinations of animal motions, 

 whether they were united by caufation, aflbciation, 

 or catenation, which have been mod frequently re- 

 peated, acquire the flrongeft connection. Secondly, 

 that of thefe, thofe, which have been lefs frequently 

 mixed with other trains or tribes of motion, have the 

 ftrongeft connection. Thirdly, that of thefe, thofe, 

 which were firit formed, have the ftrongeft connecti- 

 on. Fourthly, that if an animal motion be excited 

 by more than one caufation, aflbciation, or catena- 

 tion, at the fame time, it will be performed with 

 greater energy. 



2. Hence alfo we under (land, why the catenati- 

 ons of irritative motions are more ftrongly connect- 

 ed than thofe of the other clafles, where the quan- 

 tity of unmixed repetition has been equal ; becaufe 

 they were firft formed. Such are thofe of the fe- 

 cerning and abforbent fyftems of veflels, where the 

 action of the gland produces a fluid, which ftimu- 

 lates the mouths of its correfpondent abforbents. 

 The aflbciated motions feem to be the next mod 

 ilrongly united, from their frequent repetition , and 

 where both thefe circumftances unite, as in the vital 



motions 



