Anna Atkins Lets Sunlight Draw
Botanist Anna Atkins used sunlight to make detailed seaweed prints, connecting plant science with early photography.
Play the quiz as a gameA Problem on Paper
Anna Atkins was born in England in 1799. She became a botanist, a scientist who studies plants. She collected seaweed and wanted to share what she saw. Some pieces had broad, flat parts. Others had branches as fine as threads.
To help people study seaweed, Atkins needed clear pictures. Drawing each tiny branch took time, and a pencil could leave out small details. A new method called cyanotype printing offered a different way. Instead of drawing an outline by hand, she could let sunlight make it.
Sunlight Makes a Picture
Atkins placed a dried piece of seaweed on treated paper, which had a special coating. She held the seaweed flat under glass. Next, she exposed the paper to sunlight. Light changed the uncovered areas. Finally, she rinsed the sheet in water.
The exposed areas turned deep blue, while the seaweed's shape remained pale. The seaweed had blocked the light from reaching the paper beneath it. Even delicate branches could leave clear outlines. The print showed shape, but it did not show the plant's natural colors.
From Prints to Pages
In 1843, Atkins began sharing a book of these prints called Photographs of British Algae: Cyanotype Impressions. Algae is a group that includes seaweeds. She made the pages by hand. The name below each print served as a caption, telling readers which seaweed they were seeing.
A dried specimen, or collected plant sample, let someone look at the plant itself. A print let someone study its outline without handling it. By gathering prints into books, Atkins could share the shapes of her collection with people who did not visit her. Her work brought plant science and early photography together.