Albert A. Hopkins, Magic, Stage Illusions and Scientific Diversions…
“ Instead of scattering the aniline over paper, it is dusted over the flowers of a white rosebush, and the flowers are shaken so as to render the dust invisible, and then when a visit is received from an amateur of horticulture, we tell him that we have a magic rosebush in our garden, the flowers of which become red when alcohol or cologne is poured over them. The experiment is performed with the aid of a perfumery vaporizer, and the phenomenon causes great surprise to the spectators who are not in the secret. ”
