Main headings: Part 1. Conceptual issues in the empirical study of mysticism. - Part 2. The measurement of mysticism. - Part 3. The quasi-experimental elicitation of mystical experience. - Part 4. Mysticism, religious orientation, eroticism and death. - Part 5. Triggers and evaluation of mystical experience. - Part 6. The veridical nature of mystical experience. - Epilogue.