image ross w a_pyrology_1875_plate 3
Image number: RS.14195
Credit: ©The Royal Society

‘Complementary combinations’

Date

1875

Creator

Thomas Kell (British), Lithographer

Object type

Library reference

R61391

Material

Technique

Dimensions

height (print): 288mm
width (print): 150mm

Subject

Description

Colour wheel, showing captioned shaded spots to be used as a visual guide in the chemical analysis of specimens subjected to intense heat.

Plate 3 in the book Pyrology, or fire chemistry…, by William Alexander Ross (E & F N Spon, London, 1875).

In associated text, the author states: ‘The analysis of inorganic substances – whether effected by means of fire…is in great measure effected by the operator’s discrimination of colour..’

Inscribed above: ‘COMPLEMENTARY COMBINATIONS Plate III. Inscribed below: ’LONDON – E. & F. N. SPON, 48, CHARING CROSS. Thomas Kell, Lith.40, King Street, Covent Garden.’

William Alexander Ross, (fl.1850-1870s) British soldier, was not a Fellow of the Royal Society.

Associated place

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