THE ARREST OF THE BODY 133 



ternal eyes — have superseded the work of Evolution. 

 WJien his sight is perfect up to a point, and he 

 desires to examine objects so minute as to lie 

 beyond the limit of that point, he will not wait for 

 Evolution to catch up upon his demand and supply 

 him, or his children's children, with a more perfect 

 instrument. He will invest in a microscope. Or 

 when he wishes to extend his gaze to the moon and 

 stars, he does not hope to reach to-morrow the dis- 

 tances which to-day transcend him. He invents the 

 telescope. Organic Evolution has not even a chance. 

 In every direction the external eye has replaced the 

 internal, and it is even difficult to suggest where any 

 further development of this part of the animal can 

 now come in. There are still, and in spite of all 

 instruments, regions in which the unaided organs of 

 Man may continue to find a field for the fullest exer- 

 cise, but the area is slowly narrowing, and in every 

 direction the appliances of Science tempt the body 

 to accept those supplements of the Arts, which, being 

 accepted, involve the discontinuance of development 

 for all the parts concerned. Even where a mechani- 

 cal appliance, while adding range to a bodily sense, 

 has seemed to open a door for further improvement, 

 some correlated discovery in a distant field of 

 science, as by some remorseless fate, has suddenly 

 taken away the opportunity and offered to the body 



