Tells the story of the correspondence between George Gordon and T.H. Huxley. George Gordon was a notable figure in the fields of geology, palaeontology, archeology and local history and in his time as a Minister in the Church of Scotland he corresponded with many of the scientists of the mid-Victorian period. This book concerns itself, however, with the letters from Huxley to Gordon and from Gordon to Huxley. The letters themselves were exclusively scientific, concerning the unexpected discovery of reptilian fossils and footprints found on the shore of the Moray Firth and the interpretation of the results during the period 1858 to 1878. The book title is intended to emphasise the fact that the book's purpose is to throw light on how Huxley conducted his work as a palaeontologist.