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Kind of Blue: Beautiful Algae Images in Rare 19th-Century Book (Photos)

Dictyota dichotoma

19th-century cyanotypes of British algae

(Image credit: From The New York Public Library)

The Rijkmuseum's copy of "Photographs of British Algae" will be featured in the museum's exhibit, "New Realities: Photography in the 19th Century," open June 17 through Sept. 17, 2017.

[Read the full story on the botanical photos]