caucasian

44 photos and 1 illustration tagged caucasian, from 5 members of Flickr Commons.

When were these photos & illustrations taken?

9
1910
2013

 

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None of these photos & illustrations are geotagged.

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Photos & Illustrations tagged caucasian:

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The last upload was December 2015.

Conversations

Here’s a selection of the conversations happening on these photos & illustrations:

Untitled

from Smithsonian Institution

  • Lorraine Guthrie said:
    Why the blue tint on all the shots? This whole group is AMAZING! Thank you for posting them on flickr!
  • Smithsonian Institution said:
    We're happy you're enjoying them. The blue tint is because it's a cyanotype. Below is more information about that photo process. You can also see more cyanotypes from the Smithsonian's collections here - http://photography.si.edu/SearchImage.aspx?a_med=67 Cyanotype Sir John Herschel invented the process for printing a cyanotype—more commonly known as a blueprint—in 1842. Creating a cyanotype involved developing prepared paper with an iron-salt solution. After treating the paper with ferric ammonium citrate and potassium ferriyanide, a photographer would place a negative, or even a drawing, on top of it in direct sunlight, causing the exposed parts of the paper to turn bright blue from the effects of the iron. Subsequently submerging the print in water caused the image to become fixed and the unexposed chemicals to wash away, and the iron’s oxidation caused the blue image to intensify. Engineers and architects favored this process for copying drawings because it was stable, efficient, and inexpensive. Thomas Smillie, the Smithsonian’s first photographer, employed this printing method to keep track of his glass-plate negatives. He made and cataloged cyanotypes of each image, after which he stored the corresponding glass-plate negative.
  • Dreary Actor said:
    este si que es un orgullo, este uno de los mejores usos que se le puede dar a las nuevas tecnologías a fin de que un mayor numero de personas acceda a todo este acervo histórico y cultural... saludos desde México! :)
  • minions & myrmidons said:
    Hi, I'm an admin for a group called Face Time, and we'd love to have this added to the group!

Roxana Judkins Stinchfield Ferris (1895-1978)

from Smithsonian Institution

  • pennylrichardsca (now at ipernity) said:
    EricinSF posted this botanical image from Point Reyes, in honor of Roxana Judkins Stinchfield Ferris: [http://www.flickr.com/photos/ericinsf/3248110098/in/pool-972605@N21/?addedcomment=1#comment72157616982652439]
  • John said:
    Hi, I'm an admin for a group called Systematic Botany (not for "pretty flower images"), and we'd love to have this added to the group!
  • Lauren said:
    Hi, I'm an admin for a group called Historic Heroines, and we'd love to have this added to the group!
  • John said:
    too bad that Stanford gave away its herbarium........ :(

Alice Brown (1857-1948)

from Smithsonian Institution