320 THE ZOOLOGIST. 



great wealth of learning shows that in the phenomena of instinct 

 and of clairvoyance (which latter he states as did Schopenhaur, only 

 the ignorant reject) we have additional evidence of the operation of 

 the Unconscious in life." 



" Is it therefore illegitimate to assume that the Unconscious, the 

 psychic factor in evolution, is operative in the process of develop- 

 ment to bring about more perfect organs and higher types of life ? 

 It seems to me impossible to explain, e.g., the development of the 

 mammalian eye according to the usual method adopted by biologists. 

 It would take me too far aside from my present purpose to trace out 

 this argument ; I can only state after a prolonged study of the subject 

 of vision, that blind and fortuitous evolutionary forces, or endless 

 ages of natural selection, appear a more incredible hypothesis than 

 the assumption of unconscious thought, ever operative within the 

 organism, as the directive force in evolution."* 



■;■- "The bifocal eye of the Brazilian fish Anableps is inexplicable upon 

 a purely naturalistic theory. Mr. T. W. Rolieston, in his suggestive work 

 Parallel Paths, has referred to the Anableps' eye, pp. 100 ff., and shows how 

 impossible it is for natural selection, laying hold of fortuitous variations, to 

 explain this remarkable organ." 



