Albumen Surface View

Surface Sheen 
Albumen prints exhibit a range of surface sheen variations, which are dependent on several factors. In addition, aesthetic tastes evolved over time from favoring semi-matte surfaces in the 1850s and 1860s, to a preference for higher gloss surfaces in the 1880s and 1890s. Drying albumen in a warmer room will result in higher surface sheen as well as double coating, which was prevalent in the 1880s and 1890s. Burnishing, a finishing technique in which a second coating of albumen is applied and the print is pressed through hot rollers, also adds gloss and smooths the surface. Prints may exhibit a bluish or whitish sheen in shadow areas that is similar to silver mirroring, but occurs during exposure and is not deterioration. This phenomenon is called “bronzing.” Typical printing guidelines say to print until the margins or shadows begin to bronze. 
Surface Texture 
Albumen prints have a two-layer structure consisting of a thin paper support and an albumen binder. Although a smooth paper is used, and the print surface is often further smoothed through burnishing, the slight texture of the paper is often visible. As albumen ages, and expands and contracts in various atmospheres, it tends to crack.