Colours of double stars Product:Postcard Also showing a horse-drawn carriage

Also showing a horse-drawn carriage

Interior of the shop of Pellatt & Green

showing women and young children

') and retorts (right

Tools are lying on the ground beside him

Colours of double stars Product:Postcard Also showing a horse-drawn carriageColour chart for the classification of double stars by optical astronomy. Plate from Sidereal chromatics; being a re print, with additions, from the 'Bedford cycle of celestial objects,' and its 'Hartwell continuation,' on the colours of multiple stars by William Henry Smyth (London, John Bowyer Nichols and Sons, 1864). The plate carries no artist or printer credits. The chart omits shades between white and pale yellow as being 'unfit for