In Opening the Symposium

　It is our great pleasure to open the second international symposium on the permeability of biological membrane with the attendance of Dr. A. K. Solomon from Harvard Medical School．This symposium also corresponds to the second conference of the Research Committee on Biological Absorption and Secretion．The first international symposium was held on the occasion of visit of Travelling Mission of International Union of Physiological Sciences to Kyoto（Director：Dr. M. Visscher）on May 30th, 1960．The committee on Electrolyte Transport through the Biological Membrane, took the initiative in opening the 1st symposium．