Albumen refers to the clear part of an egg, commonly known as egg white. It is a protein-rich substance that surrounds the yolk and provides important nutrition to the embryo. Full definition
They encompass a wide historical range, from William Strudwick's gorgeous albumen prints of 19th century London (which bring to mind the work of Parisian photographer Charles Marville) to Robert Brownjohn's 1961 street photos of the city's urban typography. (americanphotomag.com)
While Bierstadt was painting the Rockies, he had been inspired to visit Yosemite and to experiment with albumen silver prints and stereographs himself. (haberarts.com)
John H. Surratt, John Wilkes Booth, and David E. Herold / Unidentified Artist / Printed Broadside with albumen silver prints, 1865 / National Portrait Gallery, Smithsonian Institution (npg.si.edu)