Page 207 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

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P L A T E 33 Photomicrograph of a sample of paratacamite
as a green pigment, from "A prostitute of the highest class
(oiran) in a garden," Japan, Ukiyo-e school, style of
Toyohiro (1773-1828) . Paper, animal glue medium.
Bright-field transmitted illumination (mounted in Aroclor
1.662; magnification Freer Gallery of Art, Smith­
R I X 3 2 5 ) .
sonian Institution ( F 1 9 9 8 . 9 4 ) .
P L A T E 34 Photomicrographs of brochantite mineral
A
34A specimen, showing , deep green tabular crystals with
homogeneous structure when viewed with uncrossed
polars; and , B highly biréfringent particles visible when
viewed with crossed polars (both in melt-mount R I 1.662;
magnification χ347). Collections of the Royal School of
Mines, South Kensington, London.

P L A T E 35 Louis-Philippe Hébert (Canadian, 1850-1917),
Monument to Sir George Etienne Cartier, Ottawa, Canada,
1
unveiled 885. Bronze. Approx. 1.5 times life size. This
1987 photograph shows the typical vertical streaking of
the brochantite patina caused by the runoff of rainwater.

34B

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