The Nervous System of Ec 



close connection which oxi.-ts between them, the two systems can aid 

 each other and work together for the accomplishment of the multiple 

 manifestation? induced by the different conditions external and inter- 

 nal, by the sensations arising from stimuli, and hy reaction. To the 

 diffused nervous system is attributed above all the role of perception 



its position and which informs it of its state of equilibrium. It is the 

 one also which accumulating those diverse and vague organic impres- 

 sions, which the physiologist groups under the name " kynetic," keeps 

 the animal in constant activity and readiness to respond to stimuli. 



" The motive impul.-es. properly speak hilt, the external manifest at i«>n> 

 of vital phenomena do not depend directly upon the diffused system. 

 Their real centre is the condensed system whirl, must then he the true 

 organ of reactionary impulses. It is the centre in which are generated 

 the reflex motions; it contains cell groups whose functions are defi- 

 nitely specialized, and which thus form the first traces of a more 

 advanced type in which the different important manifestations of 



unite them render their functional agreements close and each reinforce? 

 the other. From this last point of view a progressive specialization 

 is also manifested. In fact, the cond - causing the 



