APPENDIX 



NOTE I 



ON ARTICULATE SPEECH AS A CAUSE OF THE ORIGINAL 

 SUPERIORITY OF HUMAN INTELLIGENCE 



Mental states, such as fear, caution, anger, 

 pleasure, love, desire, etc., cause brutes to utter 

 sounds which imply the conditions of mind that 

 provoke them and tend to reproduce them in those 

 who hear these sounds. But broadly speaking, 

 there exist only habitual and conventional relations 

 between the sounds of articulate speech and whatso- 

 ever they symbolize. A speaker's manner, intona- 

 tion, pitch of voice, may indicate his mental state. 

 These, however, are merely incidental concomitants 

 partaking of the nature of brute language, and not 

 parts of articulate speech. 



The latter is a conventional combination of purely 

 arbitrary sounds which by agreement and habit 

 have come to signify similar manifestations in the 

 consciousness of many human beings. Before such 

 speech can make a beginning agreement, therefore, 

 must have been established between a considerable 

 number of persons as to matters present in the con- 



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