Polarization of the Lightreflected by the Sky. 105 
light is reflected, the transmitted ray being but little brighter 
than that reflected. With 1 or 2 surfaces the reflected beam 
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A 
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Fig. 3. 
c 
Fig. 4 
increases as 7 increases: with 8 surfaces it remains nearly con- 
stant up to 50°: while with 20 surfaces a marked diminution 
’ 
