https://library.rds.ie/files/27-11.pdf
Handwritten letter from John Tyndall to Dr William Francis. The letter contains a scathing review of the work of “Woodhead” which Tyndall describes as “perfect nonsense.” 3pp.
Collection

https://library.rds.ie/files/27-10.pdf
Handwritten letter from John Tyndall to William Francis, dated 20 July 1852. Tyndall informs Francis he is going to the Isle of Wright for two or three days and will correct any papers he sends him on his return. 2 pp.
Collection