502 SCIENTIFIC THOUGHT. 



action of external and internal phenomena, of stimulus 

 and sensation. 

 25. There existed indeed another side — that which we 



Two sides of 



Lotze's may call the philosophical ; it does not at present enter 

 into the course of our narrative, which deals only with 

 the extension of scientific or exact thought, and with 

 mental phenomena and the inner life in so far as they 

 form a province — perhaps a very restricted province — of 

 the whole of nature. This province Lotze was among 

 the first to proclaim distinctly to be one which natural 

 science had to conquer and to cultivate. He is careful 

 to explain that it does not cover the whole ground of 

 psychology, and at the end of his long discourse on the 

 " soul and its life," which formed an important con- 

 tribution to the great physiological encyclopaedia pub- 

 lished in the middle of the century, he clearly marks 

 out " physiology of the soul as an exposition of the 

 physical and mechanical conditions to which, according 

 to our observation, the life of the soul is attached," ^ as 

 one of the several problems of psychology. It formed a 

 counterpart to the physiology of the body, of the physical 

 side of our existence, and was, like it, to become a natural 

 — i.e., a mechanical — science. Subsequently he collected 

 the whole of his reflections belonging to these two de- 

 partments in two treatises on the ' General Physiology 

 of Bodily Life' (1851), and on ' Medical Psychology' or 

 'The Physiology of the Soul' (1852). 



As little as it now enters into our programme to 



manner with what affections of 

 the body. Unfortunately, medical 

 science has only too often lost sight 



less speculations referring to that 

 connection itself " (p. 197). Cf. also 

 ' Medicinische Psychologic,' p. 78. 



of this its proper pi'oblem over fruit- ^ ' Kleine Werke,' vol. ii. p. 204. 



