CONTENTS 



pa(;e 



Chairman's opening remarks 



R. E. TUNBRIDGE ....... 1 



The definition and measurement of senescence 

 by P. B. Med A WAR ..... 



Some remarks on the pathological basis of ageing 



by G. R. Cameron ....... 16 



Discussion: Brull, Cameron, Comfort, Cowdry, Franklin, 

 Krohn, Lansing, McCay, Medawar, Olbrich, Schulze, 



TUNBRIDGE, VeRZAR, ViSCHER ..... 23 



Mental aspects of ageing 



by Aubrey Lewis ....... 32 



Discussion: Comfort, Cowdry, Freeman, Lansing, Lewis, 

 Olbrich, Shock, Tunbridge, Vischer .... 48 



General Discussion: Albertini, Aub, Brull, Cameron, 

 Christie, Cowdry, Franklin, Lansing, McCance, 

 Medawar, Miescher, Rubin, Schulze, Shock, Tunbridge, 

 Verzar ......... .52 



Effects of ageing on respiratory function in man 



by D. V. Bates and R. V. Christie .... 58 



Discussion: Brull, Christie, Franklin, McCance, 



NicoLAYSEN, Schulze, Shock, TtJNBRiDGE, Verzar . . 65 



Changes with age in diffusion coefficients of solutes for 

 human tissue membranes 



by J. E. Kirk and T. J. S. Laursen . . . .09 



Discussion: Aub, Bean, Franklin, Kirk, Lansing, McCance, 

 Medawar ......... 76 



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