Herbert Silberer,
Hidden Symbolism of Alchemy and the Occult Arts
“ The idea of palingenesis appears to have no little significance for the existence of the homunculus production. They imagine that a dead living being could be restored, at least in a smokelike image, if they carefully collected all its parts, triturated them and treated the composition in a vessel with the proper fire. Then there would appear after a time, like a cloud of smoke, the faint image of the former being, plant, bird, man. The clouds vanish if the heating is interrupted. ”
