1. C.192.c.1, 6(310) Reference (shelfmark): C.192.c.1, 6(310) Title: Conferva crassa. Photographer: Atkins, Anna Scope & Content: Genre: Scientific Photography Cyanotype negative photogram negative of algae specimen, on paper watermarked paper, 'J Whatman Turkey Mill 1849,' and with British Museum yellow datestamp for 11 Oct 1851 on reverse. Collection Area: Printed Collections Languages: Not applicable Date Range: c 1851 Extent: 1 item