126 NATUKAL HISTORY OF 



complete at birth in the Caucasian type, as his dis- 

 coveries indicate, and be successively lower in the 

 Mongolic, and intermediate Malay and American, with 

 the woolly haired least developed of all, it would follow, 

 according to the apparently general law of progression 

 in animated nature, that both, or at feast the last men- 

 tioned, would be in the conditions which show a more 

 ancient date of existence than the other, notwithstand- 

 ing that both this and the Mongolic are so constituted, 

 that the spark of mental development can be received 

 by them through contact with the higher Caucasian 

 innervation : thus appearing, in classified zoology, to 

 constitute perhaps three species, originating, at different 

 epochs, or simultaneously in separate regions, while by 

 the faculty of fusion, with the last or Caucasian, im- 

 parted to them, progression up to "intellectual equality 

 would manifest essential unity, and render all alike 

 responsible beings, according to the degree of their 

 existing capabilities for this must be the ultimate 

 condition for which Man is created. Fanciful though 

 these speculations may appear, they seem to confer 

 more harmony upon the conflicting phenomena sur- 

 rounding the question, than any other hypothesis that 

 rests upon physiology, combined with geological data 

 and known historical facts. * 



* The higher order of animals, according to the investi- 

 gations of M. de Serres, passes successively through the 

 state of inferior animals, as it were in transitu, adopting 

 the characteristics that are permanently imprinted on those 

 below them in the scale of organization. Thus, the brain 

 of Man excels that of any other animal in complexity of 



