Anthotype photography is an image that is created using photosensitive organic materials, The 2 images shown were coated with Crushed Blackberry and beet juice. Mary Somerville was the inventor and one of the first photo processes used to create an image on paper.
The process is fairly easy. Crush blackberries with a mortar & pestle than add a little denatured alcohol. coat paper and let dry. Place an object, you can also use a negative, on the coated paper. The developing is done by the sun's UV light. You'll need a clear sunny day or UV lamps. Set your project in the sun and wait several hours.
This is a print-out process, meaning that anything covered will not be developed by sun's UV rays.
The only drawback to this is the prints won't last, Maybe a year or two.
Hope I didn't bore ya'll to much and thanks for stopping by.
Steve