THE CLONAL ^^^ 



SELECTION THEORY OF 

 v) ACQ,UIRED IMMUNITY 



1 BY 



\ SIR MACFARLANE BURNET 



O.M., F.R.S. •^ 



THE 



ABRAHAM FLEXNER LECTURES OF 



VANDERBILT UNIVERSITY 



1958 



CAMBRIDGE 



AT THE UNIVERSITY PRESS 

 1959 



PUBLISHED IN U.S.A. BY 



VANDERBILT UNIVERSITY PRESS 



NASHVILLE, TENNESSEE 



