CHAP, xiv.] LIFE AND MIND. 97 



source of distAirbance, we perceive a nascent form of the life 

 classed as psychical. That is to say, whenever the corre 

 spondence exhibits some extension in space or in time, some 

 increase of speciality or complexity, we find we have crossed 

 the boundary between physical life and psychical life.&quot; l 



1 Spencer, Principles of Psychology t voL L p. 392. 



VOL. ir. 



