Copy letter from Francis Towle, Assistant Secretary, to Mrs. [Louisa Charlotte] Tyndall, Hindhead House, Haslemere, Surrey Informing Mrs. Tyndall that Council of the Royal Society had approved the appointment of Mr. J.G. Garrett of Birmingham University to the Tyndall Studentship, researching the rates of fall of available ventilating pressure along the roadways of mines. 2 November 1923