VI PREFACE 



mining pedagogical horizon includes not only the subject matter of 

 Physiology, but of Physics and Chemistry on which Physiology rests, as 

 well as Clinical Medicine and Surgery for which Physiology furnishes the 

 foundation. 



For valuable aids and criticisms in this and recent editions I again 

 acknowledge grateful indebtedness to Professor Robert Banks Gibson, 

 University of Iowa, Dr. Carl Hartley Greene, Mayo Foundation, to my 

 colleague, Professor Addison Gulick, and to my students and assistants 

 of former years, Professor Theodore K. Kruse of the University of 

 Pittsburgh, and Professor Erwin Ellis Nelson of the University of 

 Michigan. 



CHAS. W. GREENE. 

 COLUMBIA, Mo., 

 Sept. i, 1922. 



