It was seven years ago this month when I had the pleasure of writing the Foreword to the Proceedings of the Eighth Conference on Thermal Conductivity hosted by TPRC/ Purdue University in 1968. Since then this Conference has developed to the point where one can say it has just entered a new phase. At its meeting in June 1975, the Board of Governors of the International Thermal Conductivity Conferences passed a resolution which formalizes two main policies that were felt to be desirable for a number of years, A key item of the resolution was for CINDAS/Purdue University to become the permanent...