1. C.192.c.1, 4(235) Reference (shelfmark): C.192.c.1, 4(235) Title: Ceramium Agardhianum. Photographer: Atkins, Anna Scope & Content: Genre: Scientific Photography Cyanotype negative photogram of two algae specimens, on paper watermarked, 'J Whatman 1845,' and with British Museum yellow datestamp of 11 Oct 1851 on reverse. Collection Area: Printed Collections Languages: Not applicable Date Range: c 1851 Extent: 1 item