One reason why these motifs of science are not used in drama to any extent is that they are impossible of representation on the stage. Even the wizardry of modern producers would be unable to show a Power of Physics, or Nitrous Acid, save as they might be embodied, as were the symbolic characters in Maeterlinck's _Blue Bird_, which would mean that they would lose their effect. And what would a stage manager do with the rhythm of the universe, which enters into Dreiser's play? Many sounds can be managed off stage, but hardly that, one fancies. These themes are not even found in closet drama, where many other elements of supernaturalism which would be difficult or impossible of presentation on the stage trail off. William Sharp's _Vistas_, for instance, could not be shown on the stage, yet the little plays in that volume are of wonderful dramatic power. The drama can stand a good deal of supernaturalism of various kinds, from the visible ghosts and devils of the Elizabethans to the atmospheric supernaturalism of Maeterlinck, but it could scarcely support the presentations of chemicals and gases and supernatural botany and biology that fiction handles with ease. The miraculous machinery would balk at stage action. Fancy the Time Machine staged, for instance! We notice in these scientific stories a widening of the sphere of supernatural fiction. It is extended to include more of the normal interests and activities of man than has formerly been the case. Here we notice a spirit similar to that of the leveling influence seen in the case of the ghosts, devils, witches, angels, and so forth, who have been made more human not only in appearance but in emotions and activities as well. Likewise these scientific elements have been elevated to the human. Supernatural as well as human attributes have been extended to material things, as animals are given supernormal powers in a sense different from and yet similar to those possessed by the enchanted animals in folk-lore. Science has its physical as well as psychic horrors which the scientific ghostly tales bring in. Not only are animals gifted with supernatural powers but plants as well are humanized, diabolized. We have strange murderous trees, vampire orchids, flowers that slay men in secret ways with all the smiling loveliness of a treacherous woman. The dæmonics of modern botany form an interesting phase of ghostly fiction and give a new thrill to supernaturalism. Inanimate, concrete things are endowed with unearthly cunning and strength, as well as animals and plants. The new type of fiction gives to chemicals and gases a hellish intelligence, a diabolic force of minds. It creates machinery and gives it an excess of force, a supernatural, more than human cunning, sometimes helpful, sometimes dæmonic. Machines have been spiritualized and some engines are philanthropic while some are like damned souls.