Polarization of the Light reflected by the Sky. 113 
en the polarimeter is directed toward a polished colored 
plane surface, the two images assume different tints. One, 
which contains the light polarized in the plane of incidence, or 
B, is composed mainly of the light reflected specularly, and is 
therefore white like the source of light. The image A contains 
but little of the light reflected specularly, consisting principally 
ane or emitted by the body, and hence partaking of its 
olor. 
