CIBA FOUNDATION 

 COLLOQUIA ON AGEING 



VOLUME 2 

 Ageing in Transient Tissues 



Editors for the Ciba Foundation 



G. E. W. WOLSTENHOLME, O.B.E., M.A., M.B., B.Ch. 



and 

 ELAINE C. P. MILLAR, A.H.W.C, A.R.I.C. 



With 96 Illustrations 



LITTLE, BROWN AND COMPANY 



BOSTON 



