Professor Wagner's Inventions is a series of science fiction short stories and novellas by Russian writer Alexander Belyayev.
[1][2] At these times works of Soviet science fiction had to operate within the strict boundaries of scientific credibility.
Therefore, to present his most outlandish fantastic ideas Belyayev disguised them as humorous stories, arranged into the series Professor Wagner's Inventions.
Professor Wagner had an infinite power over the nature: he made his body to remove the toxins than make a person sleepy, transplanted the brain of his perished assistant to an elephant, learned how to walk through walls, etc.
[2] Иван Степанович Вагнер is professor of Biology Department of the 1st Moscow University (fictional).