Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. T. Mather, FRS Asks Mather for a revised Meeting Abstract, and to ask if there is any change in the proposed title of a paper to be read. This is in connection to the reading, in title only, of the revised paper 'Primary and secondary vortices in oscillating fluids' by Mrs. Hertha Ayrton on 24 June. 4 June 1926