BINOCULAR VISION. 593 



one eye alone is used we see a flat picture without having an 

 accurate idea of the relative distances of the different things we 

 see. With each eye, however, we get a slightly different view of 

 each object, and thus we are helped to conclude as to their exact 

 distances and shape, so as to be able to arrive at fairly correct 

 judgments as to their exact form, etc. 



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