SHARP EYES AND OTHER PAPERS. 
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SHARP EYES. 
Notine how one eye seconds and reinforces the 
other, I have often amused myself by wondering what 
the effect would be if one could go on opening eye 
after eye to the number say of a dozen or more. 
What would he see? Perhaps not the invisible — 
not the odors of flowers nor the fever germs in the air 
—not the infinitely small of the microscope nor the 
infinitely distant of the telescope. This would require, 
not more eyes so much as an eye constructed with 
more and different lenses; but would he not see with 
augmented power within the natural limits of vision ? 
At any rate some persons seem to have opened more 
eyes than others, they see with such force and distinct- 
ness ; their vision penetrates the tangle and obscurity 
where that of others fails like a spent or impotent 
bullet. How many eyes did Gilbert White open? how 
many did Henry Thoreau? how many did Audubon ? 
how many does the hunter, matching his sight against 
the keen and alert sense of a deer or a moose, or a fox 
or a wolf? Not outward eyes, but inward. We open 
another eye whenever we see beyond the first general 
features or outlines of things — whenever we grasp the 
special details and characteristic markings that this 
mask covers. Science confers new powers of vision. 
