Letter from Swale Vincent, Department of Physiology, University of Manitoba, Winnipeg, Canada, to the Assistant Secretary, Royal Society, Burlington House Seeking permission to reproduce, in a publication, cliches of illustrations in a paper by himself, titled "Chromaphil tissues and the adrenal medulla" and one by himself and Mr F D Thompson, titled "The Thyroid of Vertebra", published in both the Proceedings and Philosophical Transactions of the Royal Society. 4 December 1911