Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

In this 1917 publication English physicist Sir William Fletcher Barrett (1844 1925) purports to rescue psychical research from the scorn of his colleagues and provide indisputable evidence for the existence of psychic phenomena. A successful scientist (he was elected Fellow of the Royal Society and was honoured with a knighthood), Barrett was better known for his psychical work and his attempts to reconcile it with his scientific pursuits. Certain that the human spirit could linger after bodily death, in this book Barrett examines a wide range of spiritualist practices including levitation, spirit photography, mediumship, automatic writing, the ouija board, clairvoyance, and telepathy, carefully considering the evidence for each phenomenon in the hope that they will in time be recognised as scientifically established facts. This book is a much-revised edition of Barrett's 1908 publication On the Threshold of a New World of Thought, republished to include more 'trustworthy' evidence.