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THE YELLOW-OCHRE PRINTINGS
1891 DOCUMENT
1892 DOCUMENT
1893 DOCUMENT
1894 DOCUMENT, BLOCK OF SIX
Since all micrographs were taken at the same magnification & identical lighting, it can be seen clearly
that the depth of colour decreases continuously across this four year period. Comparison of the 1894
strip on the previous frame with these micrographs gives the best view of the loss of colouring.
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