A TEXT BOOK 



OF 



PHYSIOLOGY 



BY 



M. FOSTER, M.A., M.D., LL.D., F.R.S. 



PROFESSOR OF PHYSIOLOGY IN THE UNIVERSITY OF CAMBRIDOK 

 AND FELLOW OF TRINITY COLLEGE, CAMBRIDGE 



RKVISED AND ABRIDGED 



FROM THE AUTHOR'S TEXT BOOK OF PHYSIOLOGY 

 IN FIVE VOLUMES 



WITH AN APPENDIX ON 

 THE CHEMICAL BASIS OF THE ANIMAL BODY 



BY A. SHERIDAN LEA, M.A., D.Sc., F.R.S. 



UNIVERSITY LBCTURKK IN PHYSIOLOGY IN TUB UNIVERSITY OP CAMBRIDGB 

 FBLLOW OF CAIU8 OOLLEQB, CAMBKIDOX 



||ork 

 THE MACMILLAN COMPANY 



LONDON: MACMILLAN & CO., LTD. 

 1900 



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