SecT.XVH. i. CATENATION OF MOTIONS, 221 

 SECT. XVII. 



THE CATENATION OF MOTIONS, 



I. i. Catenations of animal motion. 2. Are pw- 

 duced by irritations^ by fenfations, by volitions* 

 3. They continue fome time after they bait been ex- 

 cited. Caufe of catenation. 4. We can then exert 

 eur att-ention on other objects. 5. Many catenations 

 of motions go on together. 6. Some links of the 

 catenations of motions may be left out without dif- 

 uniting the chain. 7. Interrupted circles of motion 

 continue confufedly till they come to the part of the 

 Circle ', where they were dijlurbed. 8. Weaker ca- 

 tenations are diJJ.evered by flronger. 9. Then new 

 catenations take place. 10. Mitch effort prevents 

 their reuniting. Impediment of fpeech. 1 1. Trains 

 more eafily diffevered than circles. 12. Sleep 

 deftroys volition and external ftimulus. II. 7- 

 flanccs of various catenations in a "sung lady play- 

 ing on the harpjichord, HL \.V\ } hat catenations are 

 the Jlrongeft. %. Irritations joined with affociations 

 from Jlronge ft connexions, Vital motions. 3. New 

 links with increafed force ', cold fits of fever produced. 



4. New links with decreafed force. Cold bath, 



5. Irritation joined with fenfation. Inflammatory 

 fever. Why children cannot tickle themfefaes* 



6. Volition joined with fenfation. Irritative ideas 

 of found become fenfible. 7. Ideas of imagination 

 ^dijevered by irritation, by volition, production of 



furprife. 



I. i. To inveftigate with precifion the catena* 

 tions of animal motions, it would be well to attend 

 9 the manner pf their production : but we cannot 



begin 



