%tz CATENATION, &c. Sect. XVII. 3. 7. 



one experiences in fome degree when he hears a noife in the 

 dark, which he cannot inftantly account for. This catenation 

 of fear with f urprife is owing to our perpetual experience of in- 

 juries from external bodies in motion, unlefs we are upon our 

 guard againft them. See Seel. XVIH. 17. XIX. 2. 



Many other examples of the catenations of animal motions 

 are explained in Seel. XXXVI. on the Periods of Difeafes. 



SECT. 



