Michael Collie 
Huxley at Work [PDF ebook] 
With the Scientific Correspondence of T. H. Huxley and the Rev. Dr George Gordon of Birnie, near Elgin

The previously unpublished correspondence of T.H.Huxley with Rev. George Gordon is an important new addition to the literature on Huxley and Victorian science. The correspondence is self-contained and wholely scientific, concerning the unexpected discovery of reptilian fossils and footprints near Elgin, and relates to a most important aspect of Huxley’s career: defining the relationship between geology and palaentology. The letters are complemented by an incisive analysis of Huxley’s work as a palaentologist and the development of his views on evolution.