Annie Besant and C.W. Leadbeater.
The Theosophical Publishing House: 1952. Fifth edition. Near fine hardcover in a very good dust jacket.
"Telepathy, clairvoyance, movement without contact, though not yet admitted to the scientific table, are approaching the Cinderella-stage. The fact is that science has pressed its researches so far, has used such rare ingenuity in its questionings of nature, has shown such tireless patience in its investigations, that it is receiving the reward of those who seek, and forces and beings of the next higher plane of nature are beginning to show themselves on the outer edge of the physical field. 'Nature makes no leaps,' and as the physicist nears the confines of his kingdom he finds himself bewildered by touches and gleams from another realm which interpenetrates his own. He finds himself compelled to speculate on invisible presences, if only to find a rational explanation for undoubted physical phenomena, and insensibly he slips over the boundary, and is, although he does not yet realise it, contacting the astral plane."