Further experiments with liquid helium. P. On the lowest temperature yet obtained

Abstract

Mr. President and Members of the Faraday Society and the British Cold Storage and Ice Association. It is with deep sorrow that I bring to remembrance here the great loss science has suffered by the death of my dear friend and colleague Prof. Kuenen, a not less heavy personal loss for myself. On account of his many-sided work in experimental and theoretical thermo-dynamics, Prof. Kuenen was highly interested in the present meeting. His most beautiful work, such as the discovery of retrograde condensation, lies in the domain of the equilibrium of the liquid and gaseous phases in which mixtures of gases separate. The part he would have taken in the discussion on industrial processes dealing with such mixtures would surely have been an important one. In the meantime he looked forward with great sympathy to my having the honour to address you. If it should prove that I could not read my paper personally he promised to do so. The day before his unexpected death I saw him bright and in full vigour and it is a deep sorrow now to remember that the happy conversation we had the last hour we spent together had its starting point in arrangements for the present discussion.