The blue seaweed book made without a camera

Art & literatureMuseum collection record · Undated web page

Added 2026-10-22 · Daily discovery

A spray of pale seaweed rests against a deep blue page. Its branches are delicate, but the image was not drawn. Anna Atkins made this kind of botanical photograph by putting the specimen itself against light-sensitive paper. The plant blocked part of the light, leaving a pale impression on a blue ground. A camera was unnecessary.

In 1843, Atkins began issuing Photographs of British Algae: Cyanotype Impressions in parts. The Metropolitan Museum of Art identifies it as the first book both printed and illustrated photographically. Its specimens came from her own collecting and exchanges with other amateur scientists. For their names she followed William Harvey’s 1841 Manual of British Algae, an unillustrated book, and labelled her plates by hand.

The process was new: John Herschel had invented cyanotype in 1842. Atkins used it to record the forms of algae, arranging their strands across individual sheets. The Met explicitly describes a meeting of science and art in these compositions, while noting that artistic expression was not her chief purpose. That connection belongs to the museum’s account of the work; it does not depend on a modern theory about what the images resemble.

The labour behind the blue pages was substantial. The Natural History Museum reports that Atkins made every print herself and that its copies contain 411 plates. Even the book’s text pages and captions reproduce her handwriting photographically. The museum also places her work within a network of scientific education, acquaintances and exchanges, rather than presenting her as an isolated inventor.

Start with the Met’s album record for the project’s history, then its separate record for Dictyota dichotoma, dated around 1853. The reproduced page shows the seaweed spread across the centre, with its name beneath it. The Natural History Museum’s longer account follows Atkins from botanical illustration into photography, explaining how these small, directly printed specimens became an unusually blue book.

Historical work, newly added to the Cabinet. Read the museum accounts below for their full context.