A new edition of the original text and illustrations of Faraday's Christmas lectures given at the Royal Institution. He directed these talks to an audience with restricted scientific knowledge, thus science-minded teenagers today should be able to comprehend many of them. There is biographical material, a set of notes and an explanatory foreword in addition to the lectures themselves. For youngsters who have researched The Chemical History of a Candle or Faraday as a Discoverer this can be added to form a rounded trilogy of Faraday books.