PREFACE 



Exercises have been numbered within their own sections; thus 

 Fig. 9/14/2 is the second figure in S.9/14. A simple reference, e.g. 

 Ex. 4, is used for reference within the same section. Whenever a 

 word is formally defined it is printed in bold-faced type. 



I would like to express my indebtedness to Michael B, Sporn, who 

 checked all the Answers. I would also like to take this opportunity 

 to express my deep gratitude to the Governors of Barnwood House 

 and to Dr. G. W. T. H. Fleming for the generous support that made 

 these researches possible. Though the book covers many topics, 

 these are but means; the end has been throughout to make clear 

 what principles must be followed when one attempts to restore 

 normal function to a sick organism that is, as a human patient, of 

 fearful complexity. It is my faith that the new understanding may 

 lead to new and effective treatments, for the need is great. 



Barnwood House W. Ross Ashby 



Gloucester 



vu 



