A Practical Manual of the Collodion Process, Giving in Detail a Method For…

A Practical Manual of the Collodion Process, written by S. D. Humphrey in the mid-19th century, is a detailed guide for photographers focusing on the collodion process. This revolutionary technique allows for the production of photographic images on glass and paper, including ambrotypes. The manual includes comprehensive instructions on various methods and discusses the underlying photographic chemistry, making it a significant resource for both amateur and professional photographers of the era.