1. C.192.c.1, 5(271) Reference (shelfmark): C.192.c.1, 5(271) Title: Callithamnion thuyoides. Photographer: Atkins, Anna Scope & Content: Genre: Scientific Photography Cyanotype negative photogram of algae specimen, on unwatermarked paper. Collection Area: Printed Collections Languages: Not applicable Date Range: 1843-1853 Extent: 1 item