1. C.192.c.1, 8(410) Reference (shelfmark): C.192.c.1, 8(410) Title: Mesogloia purpurea. Photographer: Atkins, Anna Scope & Content: Genre: Scientific Photography Cyanotype negative photogram of algae specimen, printed on unwatermarked paper, but with British Museum yellow datestamp for 12 Nov 1853 on reverse. Collection Area: Printed Collections Languages: Not applicable Date Range: c 1853 Extent: 1 item