xxiv 



PREFACE, FIRST EDITION 



edge the assistance and friendly interest of 

 Dr E. V. Cowdry, not only during the 

 initial phases of this project, but through- 

 out its progress and consummation. Dr. F. R. 

 Lillie has counselled wisely in regard to 

 titles and content of some of the sections. 

 Valuable counsel and encouragement has 

 also been received from several of the con- 

 tributors. The editor also wishes to commend 



the contributors for their team-work ni 

 eliminating or reducing overlaps between 

 sections which is so necessary in the unifica- 

 tion of interlocking material from closely 

 related subjects. 



Edgar Allen 

 University of Missouri School of Medicine 

 Columbia, Missouri 

 May, 1932. 



