270 BIOLOGY. 



however, feeling or touch combined with motion. If the 

 corolla could attain to a sensorial function, it would be 

 to that of touch. 



1439. It is conducted thereto; but at the instant, 

 when it is indulged in feeling the mental capacity of the 

 animal, it sinks down exhausted and dies. It is pu- 

 nished for the risk that has been run in wishing to attain 

 unto self-cognition. 



1440. Motion and touch are revealed only in the 

 highest organs of the plant, or in the stamina. The 

 filament moves upon the pistil and touches it with the 

 pollen, which at that instant, however, is scattered in 

 small particles, and leaves behind the filament in a 

 withered state. 



1441. The motion performed by the filaments appears 

 to be a simple operation of the irritability in the tracheae 

 that have become soft, without undergoing chemical 

 decomposition, but probably by sudden influx of sap, 

 induced by the tension of air in the spiral vessels. 



1442. In the highest, or the pinnate, leaves, move- 

 ments, which are probably a result of the tracheal irrita- 

 bility, also occur, but are devoid the object of coming 

 into contact with, or of touching, anything. The sensi- 

 tive plants, as Hedysarum gyrans, move their leaves, not 

 from any intrinsic determination upon their part, but in 

 accordance with an antecedent stimulus, and thus not 

 voluntarily, but probably through the influence merely 

 of polar tension. The movements of leaves are convul- 

 sions of plants, although too an afflux of sap be caused 

 or induced by the stimulus. 



SAP-MOTION. 



Galvanic Process. 



1443. The motion of the sap is imparted through the 

 antagonism of the respiratory and digestive processes. 

 For these two processes are the combination of the 

 Chemical with the Electric, which is the galvanism. 



1444. The galvanic poles attract and repel the fluidity ; 



