Otis Adelbert Kline

Through the discoveries of the scientist, Dr. Morgan, a young Martian's astral body is projected into the body of one Harry Thorne on Earth, and from Earth to Venus, or Zarovia, where the man of Mars becomes Prince Zinlo of the mighty empire of Olba. Zinlo is instructed by Morgan's fellow scientist Vorn Vangal in the universal language of Venus...