ESSENTIALS 



OF 



HUMAN PHYSIOLOGY 



BY 



D. NOEL P^TON, M.D., B.Sc., F.R.C.P. ED. 



SUPERINTENDENT OP THE RESEARCH LABORATORY OF THE ROYAL COLLEGE OF PHYSICIANS 



OF EDINBURGH; LECTURER ON PHYSIOLOGY, SCHOOL OF MEDICINE OF THE ROYAL 



COLLEGES, EDINBURGH ; EXAMINER IN PHYSIOLOGY IN THE UNIVERSITY 



OF GLASGOW AND FOR THE ROYAL COLLEGE OF PHYSICIANS, 



EDINBURGH ; AND LATE EXAMINER IN THE 



UNIVERSITY OF EDINBURGH 



SECOND EDITION 



REVISED AND ENLARGED 



or THE 



SSITY 



WILLIAM GREEN <3 SONS 

 EDINBURGH AND LONDON 



W. T. KEER & CO., 

 CHICAGO. 



