The photographic negative : written as a practical guide to the preparation of sensitive surfaces by the calotype, albumen, collodion, and gelatine processes, on glass and paper, with supplementary chapters on development, etc., etc. (1888)
Burbank, W. H. (William Henry), 1853- · New York : Scovill Manufacturing Co. · leaf 199
pictures are pro- duced is little known and rarely practised. To the best of the writer’s knowledge, there is but one producer of these articles in America, and his methods are not known to the author. The metliod here given is that employed by the best French producers of micro-positives, and is… … show^s only a few of the Fig. 37. objectives. This apparatus is known as the microscopic apparatus, and can be obtained of most large dealers in photographic goods.
Photography
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