t .2 ] 



scientific truth can be subjected. Hence it follows 

 that the truth which is attained by the method of 

 science is in some sense mutable ; and that it cannot 

 claim validity except in relation to the minds by 

 which it is perceived. 



Section III. is intended to strengthen the argu- 

 ment from history by showing that the scientific 

 criterion is one which would naturally emerge in the 

 process of animal evolution. 



Section IV. exemplifies the use of the scientific 

 criterion by showing its application to questions of 

 evidence. 



DEFINITION. 



In the expression for the criterion of scientific 

 truth mention has been made of the arrangement of 

 reminiscences. This is no doubt very closely related 

 to what Locke called the " association of ideas/' but 

 I believe that there is no single English word denot- 

 ing the process. To supply this deficiency I have 

 employed the term syutaxis in the sense of a process 

 of mental arrangement, especially a logical arrange- 

 ment of reminiscences ; and by way of distinction I 

 have taken the shortened form syntax to denote 

 the sequence of reminiscences as arranged by syntaxis. 

 In English the word had been monopolised by the 

 grammarians, but in Greek it denoted any orderly 

 arrangement, physical or mental. 



