Water fixed photogenic drawing negative of four leaves. Sir John Herschel (1792-1871), English astronomer, mathematician and chemist and the son of Sir William Herschel. Herschel introduced 'hypo' (thiosulphate) as a photographic fixerative and discovered the cyanotype or blueprint process in 1842.

Picture Reference: 10305196
Subject: ENTERTAINMENT & MEDIA > > Processes, Photogenic Drawings
Inventory No.: 1943-0038_0002
Credit: NMeM

Keywords: 1780-1818, 1800s, 19th Century, Drawing, Early Photography, Europe, Fixed, Frederick, Herschel, Herschel, John F W (john Frede, Herschel, John, Industrial Revolution, John, John Herschel, Leave, Natural World, Negative, Photogenic, Photograph, Photography, Photogenic Drawing, Sir, Uk, United Kingdom, Water, Water Fixed, William

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