Through no fault of the administrators of the Association my October number of the Gazette has come to hand five months late, and with it the letters of Mr Tuckey and Mr. Snell in criticism of my article, “A Weighty Matter” (Gazette, May 1937). On account of pressure of other affairs, the absence of the missing number was overlooked, I trust that the gentlemen concerned have not assumed that I have succumbed to the adverse portions of their comments “hands down”, and hasten to assure them to the contrary as well as to apologise to them for apparently ignoring their replies. I am grateful for the opportunity afforded me by the publication of their open letters to reconsider not so much the substance as the wording of certain statements in my article, and at the same time to bring forward other suggestions and comments which I have received from other correspondents.