Letter from Thomas Gold to Dr Joseph A Burns, Department of Theoretical and Applied Mechanics, Thurston Hall, Campus Encloses the abstract that Burns sent him for examination. The only serious comment is for the case of Bailey - Gold believes there is a profound misunderstanding there. Perhaps an amplification will make this clear (unless Burns understand the mater). The Safronov-Ruskol paper is absolutely the discussion Gold favours. He hopes someone will present that case, if they cannot come. 5 July 1974