5t6 



The Rev. S. Haugliton on some new Laws 



times that in the perpendicular plane. We are now approaching 

 the circular limit, or azimuth of incident polarization, at which 

 the reflected light at the principal incidence will be circularly 

 polarized. 



Table VI. 

 Azimuth of polarizer =85° 45'. Red sunlight. 



Here we observe the ratio -r approaching unity, while the 



axis major, as shown by the fifth column, still follows the Law V. 



Laws L, IL, IIL, V. are verified by this table. 



The principal incidence is 55° 6', and the ratio of quantities 

 of light reflected in, and perpendicular to, the plane of incidence 

 is 1*17 at the principal incidence. 



Table VIL 

 Azimuth of polarizer =85° 55^ Red sunlight. 



In this table we have just passed the circular limit, and the 

 column for <f> begins to show Law VI., which will be more fully 

 developed in the succeeding experiments. 



The principal incidence is 55° 7' ; and the minimum ratio of 

 the quantities of light reflected in, and perpendicular to, the 

 plane of incidence is 1*04. 



