You will find all information respecting the "Zodiacal light" in "Guillemin on the Heavens."
Herschel, Nichol, Guillemin's recently translated "Heavens" are the guides to be chosen.
On one occasion, Guillemin and his companion receive sixpence per day: but this is altogether an unusual sum.
Guillemin also describes a transformation of the stamens into carpels in Euphorbia esula.
Guillemin, who was cook to the Duc de Vincennes, brought Ledoyen's into great favour in the fifties of the last century.