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Catalogue Entry 1989

[] Direct-positive photogenic drawings by Robert Hunt, 1839.

Contact image of an engraving, similar to those used by Herschel;

camera image of a row of houses, probably in Devonport where Hunt lived;

two contact images of leaves;

printed instructions for making 'drawings' by Hunt's process;

unused specimen of his prepared paper.

The process achieved a positive image without a negative stage, using exposed (blackened) silver nitrate paper re-sensitised with potassium iodide or other metal salts.

[From the exhibition booklet Photography 150: Images from the First Generation (Oxford: Museum of the History of Science, 1989)]

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