This is an exceedingly comprehensive study of the element Helium and a true work of scholarship. John Taylor traces the beginnings of his fascination with Helium to his association with airships and use of the element as a safe lifting gas. Over a period of some six years the author absorbed a very considerable knowledge of all aspects of the element Helium and has rationalised that into an extraordinary detailed six part book. Where visual aids are applied, they are invariably of a high quality as are illustrations depicting various reactions in diagrammatic form. The book is highly educational and it is no exaggeration in describing it as the definitive work on the Helium element.