An article in The Public Domain Review, 'Worlds Without End', discusses the early work of the SPR: The introduction states:
'At the end of the 19th century, inspired by radical advances in technology, physicists asserted the reality of invisible worlds — an idea through which they sought to address not only psychic phenomena such as telepathy, but also spiritual questions around the soul and immortality. Philip Ball explores this fascinating history, and how in this turn to the unseen in the face of mystery there exists a parallel to quantum physics today.'
The article can be found here:
http://publicdomainreview.org/2015/12/09/worlds-without-end/
(Posted 11 December 2015)