Description
Colour chart for the classification of double-stars by optical astronomy
carrying a basket and ringing a bell
' This image is likely to date from the Royal Society's 6 May 1896 soiree and the inscribed date indicates when Armstrong signed the resulting print rather than when the original image was taken
'How Mordred plotted against Sir Launcelot'
John Winthrop Aboard the Arabella medical instrument Colour chart for the classification
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