Inscribed: "1er cercle chromatique de Mr. Chevreul renfermant les couleurs franches."

Chevreul’s first chromatic circle shows 72 colors in their purest hues.

Inscribed: "2ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 1/10 de noir."

Chevreul’s second chromatic circle shows the 72 pure hues from Plate V subdued with 1/10 black.

Inscribed: "3ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 2/10 de noir."

Chevreul’s third chromatic circle shows the 72 pure hues from Plate V subdued with 2/10 black.

Inscribed: "4ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 3/10 de noir."

Chevreul’s fourth chromatic circle shows the 72 pure hues from Plate V subdued with 3/10 black.

Inscribed: "6ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 5/10 de noir."

Chevreul’s sixth chromatic circle shows the 72 pure hues from Plate V subdued with 5/10 black.

Inscribed: "7ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 6/10 de noir."

Chevreul’s seventh chromatic circle shows the 72 pure hues from Plate V subdued with 6/10 black.

Inscribed: "8ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 7/10 de noir."

Chevreul’s eighth chromatic circle shows the 72 pure hues from Plate V subdued with 7/10 black.

Inscribed: "9ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 8/10 de noir."

Chevreul’s ninth chromatic circle shows the 72 pure hues from Plate V subdued with 8/10 black.

Inscribed: "10ème cercle chromatique de Mr. Chevreul renfermant les couleurs rabattues, à 9/10 de noir."

Chevreul’s tenth chromatic circle shows the 72 pure hues from Plate V subdued with 9/10 black.

The gamut of orange-yellow tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of grey tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of red tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of red-orange tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of orange tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of yellow tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of yellow-green tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of green tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of green-blue tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of blue tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of blue-purple tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of purple tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The gamut of purple-red tones from light to dark along a 20-tone scale, where positions 0 and 21 correspond to white and black respectively.

The third edition of a work on dyeing and printing with aniline dyes on fabric, cotton, and silk. Contains 88 colored fabric samples. Only dye samples have been digitized.

Frontispiece illustration contains three figures. Figure six is entitled "Spectrum showing the absorptive power of Sodium vapor," which is a spectrum of sodium. Replicating Sir Isaac Newton's (1642-1727) discovery,…

From a photograph taken of a solar eclipse observed from Syracuse, Sicily on 22 December 1870.
From text: "The photograph taken by Mr. Brothers is very valuable, since it shows the halo extending towards the…