Letters on nominations to deliver the Croonian Lecture Letters of invitation and replies from nominees, on the delivery of the Croonian Lectures at the Royal Society. Correspondents include Francis Alexander Towle; Dr Henry Head; Professor William Bateson; William Bate Hardy, Secretary, Royal Society; Thomas Hunt Morgan; Ernest Henry Starling; Frederick Frost Blackman, Botany School, Cambridge; Professor David Meredith Seares Watson; Professor Rudolf Magnus. 1921-1925