1. C.192.c.1, 3(161) Reference (shelfmark): C.192.c.1, 3(161) Title: Gigartina purpurascens. Photographer: Atkins, Anna Scope & Content: Genre: Scientific Photography Cyanotype negative photogram of two algae specimens, on paper watermarked, 'J Whatman Turkey Mill 1843.' Collection Area: Printed Collections Languages: Not applicable Date Range: c 1843 Extent: 1 item