117 CAMBRIDGE, ENGLAND. University of Cambridge. School of Agriculture. Institute of Animal Nutrition. Dr. Thomas Deighton. Now Deighton is running his own show. T. B. Wood has died and Capstick is very seriously ill and I believe never comes to the laboratory. Consequently Deighton is running around laying most emphasis upon problems of an economic nature. The most unfortunate thing is that Deighton has no adverse critic. Since my last visit here he had been empowered by the authorities to take a trip to the Continent and I found that he had visited Fingerling, Mj^llgaard, and Lefèvre, and I am not sure about Zurich and Berlin. He had had no experience in indirect calorimetry but had made this visit to European laboratories and presented a very confidential report to the British Ministry, including a rather harsh criticism of Lefèvre, and he was most chagrined to think that the British Ministry permitted Lefèvre to see a copy of this. He tried to get a copy for me but the successor to T. B. Woods, F. W. H. Marshall, whom I had not met personally, told Deighton that I could not have it. At present he was distressed by the fact that the Minister of Agriculture had lost interest or had "let down" in appropriations. In a recent article Deighton had touched upon a theory of Rubner on the question of length of life, death, and the potentialities of life, much upon the basis that a man or animal had only a certain time to live anyway and that with excessive activity he would be burned up more quickly. This is interesting in connection with work proposed by the Nutrition Laboratory in 1955 on Professor Sherman's rats. Deighton is still obsessed with the idea of direct calorimetry and he had made experiments on the cat. He is at present constructing a compensation chamber for poultry, in which he is using cellophane walls, their particular value being, according to him, that the poultry will live normally in light. (See figures 7 7 > 7$> and 7?*) The apparatus had also an elaborate electrical heating system and temperature measuring system to maintain the walls at constant temperature. It seemed to me rather hopeless. Although he had direct calorimetric compensation chambers he wishes now to add the indirect to it. He felt that 24-hour periods were necessary for poultry, but he also admitted that poultry experiments were made primarily for political reasons, to keep the interest of their farmer constituents.