Hello, I think the obvious answer is likely the correct one -- albumen. This was the most common printing process in the late 19th Century. Thin cracks in the emulsion are very common. The process was normally done on very thin paper, which was glued to a cardboard support -- this appears to be the case from Philippe's description and scan (http://www.photo.net/photodb/photo?photo_id=3386096). Matt paper became popular towards the end of the albumen period -- they were prepared using arrowroot starch. Highlight yellowing is also very common. The Kodak book "Conservation of Photograhs" says that albumen prints were sometimes tinted green to hide the yellowing. Coating was commonly done by floating the paper in the solution, resulting in a uniform coating without brush marks. The contrast looks reasonable to me -- the photographer probably controlled the contrast in developing the negative. --Michael ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.