328 Heredity. 



numerous experiences received during the evolution of life, or, 

 rather, during the evolution of that series of organisms through 

 which the human organism has been reached. The effects of the 

 most uniform and frequent of these experiences have been suc- 

 cessively bequeathed, principal and interest ; and have slowly 

 amounted to that high intelligence which lies latent in the brain 

 of the infant which the infant in after life exercises, and perhaps 

 strengthens or further complicates and which, with minute 

 additions, it bequeaths to future generations. And thus it hap- 

 pens that the European inherits from twenty to thirty cubic inches 

 more brain than the Papuan. Thus it happens that faculties, 

 as of music, which scarcely exist in some inferior human races, 

 become congenital in superior ones. Thus it happens that out of 

 savages unable to count up to the number of their fingers, and 

 speaking a language containing only nouns and verbs, arise at 

 length our Newtons and Shakespeares.' 



IV. 



All that has been said of the intelligence may be applied to the 

 sentiments. We have, even, in some measure anticipated that 

 subject, for it was impossible to borrow facts from history which 

 should not be concrete, synthetic that is to say, mixed with 

 sentiments and ideas ; it is only the analytic method of psychology 

 which separates these two elements, almost always intimately 

 united. 



If I think of any triangle, a sphere, a parabola, an algebraic 

 operation, or any other mathematic truth, the result for me is a 

 cognition, and nothing more. But most of the objects of which 

 we think, or which we perceive, produce in us an agreeable or a 

 disagreeable state Le. a sentiment simultaneously with their 

 cognition. Though we class them under the general heads of 

 pleasure and pain, the sentiments are infinite in number, in 

 shades, in intensity, etc. It may be said that every sentiment 

 not including those altogether inferior modes of sensitive action 

 which are little more than instincts implies at least an indistinct 

 cognition. In that low region of the unconscious, sentiment and 

 thought seem blended in indiscriminate unity, where they cannot 

 be reached directly by any of our means of cognition. But so 



