Letter from Carrie Gold to Mr S F Smerd, Chairman, Local Organizing Committee, I.A.U. Solar symposium, CSIRO Division of Radiophysics, PO Box 76, Epping, New South Wales 2121, Australia As Professor Gold has had to change his plans and is unable to attend the IAU meeting in Australia, she is returning the paper by Dr Yousef for Smerd to had on to the neew chairman of the session he would have chaired. 30 July 1973