[Slate quarries, Bethesda, Wales] (LOC)

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    [Slate quarries, Bethesda, Wales]

    [between ca. 1890 and ca. 1900].

    1 photomechanical print : photochrom, color.

    Title from the Detroit Publishing Co., catalogue J--foreign section. Detroit, Mich. : Detroit Photographic Company, 1905.
    Print no. "10352".
    Forms part of: Views of landscape and architecture in Wales in the Photochrom print collection.


    Format: Photochrom prints--Color--1890-1900.

    Rights Info: No known restrictions on reproduction.

    Repository: Library of Congress, Prints and Photographs Division, Washington, D.C. 20540 USA, hdl.loc.gov/loc.pnp/pp.print

    Part Of: Views of landscape and architecture in Wales (DLC) 2001700652

    More information about the Photochrom Print Collection is available athdl.loc.gov/loc.pnp/pp.pgz

    Persistent URL: hdl.loc.gov/loc.pnp/ppmsc.07367

    Call Number: LOT 13408, no. 031 [item]

    k masback, mthw, Cam B., and 23 other people added this photo to their favorites.

    1. Vagabond Jewelry (Kest) 70 months ago | reply

      article on the process of photochrom:


      "A litho stone is coated with a thin layer of purified bitumen dissolved in benzene. A reversed half-tone negative is then pressed against this light-sensitive coating and an exposure in daylight made (taking from 10–30 minutes in summer, to several hours in winter). The bitumen hardens and becomes resistant to normal solvents in proportion to the light. The coating is then washed in turpentine solutions, removing the unhardened bitumen. It is then retouched in the tonal scale of the chosen color to strengthen or soften the tones as required. Each tint needs a separate stone bearing the appropriate retouched image, and prints are usually produced by at least six, and more commonly from 10 to 15 tint stones.[4]"

    2. dohreme 70 months ago | reply

      This picture looks very much like its based on a painting that hangs in Penrhyn Castle that shows the labour force at work, that the richness of Penrhyn Castle was built off the back of.

    3. dohreme 70 months ago | reply

      Found the details of the painting. Its by Henry Hawkins painted in 1832 and features this same outstanding outcrop of rock.

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