116 ANIMAL-SENTIENT FORCES. [i. 



primary and all its subordinate sensations; and that the pri- 

 mary and subordinate, separately considered, are the elements 

 of an entire external sensation. The same principles apply to 

 the actions of compound conceptions. 



226. Just as the subordinate sensations are developed at the 

 same time as the entire external sensations, so also their sentient 

 actions are produced in the machines in which they act (225). 

 But since the subordinate, like all other external sensations, 

 do not necessarily set the mechanical machines into movement, 

 to which the nerve is distributed that has received their cerebral 

 impression, on account of natural hinderances (201), it follows, 

 that the sentient actions of a complex external sensation may 

 occupy sometimes a greater, sometimes a less, sphere of action, 

 according to the variety in the impressions in the brain, which 

 make up the constituents of the total external sensation, and 

 according to the nature of those normal hinderances, which im- 

 pede or divert the course of the impressions from the brain to 

 the machines (165, vi). The stronger, however, the subordinate 

 external sensations, the stronger are the actions which they 

 actually excite (218, 225). 



227. All external sensations arc entire conceptions, consist- 

 ing of many elements. (Baumgarten's 'Metaph.,' §§ 378, 405.) 

 It follows, therefore, that all their direct actions may consist 

 of many elements, and this may occiu" when no natural hin- 

 derances exist to the transmission of their cerebral impres- 

 sion (116) . But all their actions do not depend upon subordinate 

 sensations, since at the same moment distinct primary external 

 sensations may be in the mind, which manifest, at the same 

 time, their proper sentient actions, according to the laws of 

 primary external sensations ; these may be termed co-ordinate 

 external sensations, and sentient actions. 



Actions of Imaginations on the Mechanical Machines through 

 the Nerves. 



228. The sensational conceptions are external sensations, 

 spontaneously imitated or repeated by the soul, the external 

 impression which can give them the reality of external sensa- 

 tions not being present {Q7) ; that is to say, in each imagination 

 many sub-impressions [Merkmale] of the external sensation 



