Second Series.—Circular Polarization. A471 
place at metallic surfaces, renders it easier to obtain distinct re- 
sults than in some other cases, the intricacy of the subject, and 
some deviations from the laws of light, as established in Sir 
Davin Brewster’s remarkable paper on this subject,* demand a 
more prolonged investigation than I have yet been able to give 
to it. In the hope of being able to resume it in another paper, 
I content myself at present with a reference to the facts respect- 
ing Metallic Reflection, communicated to the Society on the 
2ist of March last, a memorandum of which will appear in their 
printed Proceedings. 
Evingunen, 2d May 1836. 
* Philosophical Transactions, 1830. 
