Waller encloses 2 copies of his fourth article on radiation (not present). The section concerning Rotblat was omitted at the last moment because Rotblat did not reply. Waller submitted a letter to The Times and asked them to hold it until he wrote them again. Legal affairs are disheartening but Waller has received messages of support from people and scientists and is glad that the matter of radiation has been taken up by the United Nations. Waller is preparing his final article in which he hopes to explain the controversy about the topic and the discrepancy in points of view.