Glossolalia (paranormal speaking in tongues) and zenolalia (paranormal speaking in allegedly foreign languages) are features of many sub-cultures and religions. The most obvious example is Pentecostalism, where every believer in many denominations is expected to speak in tongues at least once - the gift in other cultures being limited to individuals, shamans and mediums. This book, first published in 1978, surveys the practice of 'speaking in tongues'...