Lugones' "An Inexplicable Phenomena"

The story of a man who manages to achieve some degree of projection but ends up suffering a division of his soul. Some interesting 1900s technobabble aside, the story is reminiscent of the lesser works of pre-Lovecraft weird writers: some intriguing set up but little emotional impact. The manifestation of division appears to have been inspired by Stevenson's "Jekyll & Hyde" or Le Fanu's "Green Tea," though I don't know enough about Lugones to state the case for either definitely.