28th May, 2021 14:00
Photographs (1840 - 2020)
School of John Herschel c.1860
School of John Herschel c.1860
A DROP OF HUMAN BLOOD c.1860, Microscope Albumen print, in contemporary circular card mount, image diameter, 127mm with manuscript title in ink, lower margin Photograph of 1/10000 of a drop of human blood. Red blood disks(?) Magnified 250000 times (sic)
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