Description: The 329 letters in this volume represent a period of immense transition in John Tyndall's life. A noticeable spike in his extant correspondence during the early 1850s is linked to his expanding international network, growing reputation as a leading scientific figure in Britain and abroad, and his employment at the Royal Institution. By December 1854, Tyndall had firmly established himself as a significant man of science, complete with an influential position at the center of the British scientific establishment.