XIV PREFACB 



mention in this respect. Miss Mildred Runciman took com- 

 plete charge of such matters as spelling and the accuracy of 

 reference to other books. Where the punctuation and syntax 

 follow estabhshed usage, she is also responsible. Improprie- 

 ties indicate where she lost the argument. 



Robert S. Morison, M.D. 



Peterborough, New Hampshire 

 November 29, 1963 



