PREFACE. Vll 



ture and formation of gall-stones, the investigation of the 

 gastric contents, &c. 



If circumstances permit me, it is my wish after the 

 publication of a second edition of Vol. I., to complete, by 

 an equally thorough study of other great animal functions, 

 my survey of the Physiological Chemistry of the Animal 

 Body. Whether that wish be accomplished or not, I trust 

 that the present volume may, like its predecessor, further 

 the advancement of, and prove not altogether unworthy of 

 the present position of, physiology in England. 



I have to acknowledge my deep indebtedness to Pro- 

 fessor Hugo Kronecker who has placed at the disposal of 

 his old friend the whole resources of the Physiological 

 Institute of the University of Berne, besides helping me 

 by his profound acquaintance with the literature of physi- 

 ology. I am also indebted to Professor Drechsel, who is 

 as distinguished for his discoveries throughout the whole 

 range of Physiological Chemistry as for his encyclopaedic 

 knowledge of its literature and who has aided me by 

 most valuable suggestions and by the loan of papers and 

 books. I would acknowledge my obligations to Mr 

 F. J. H. Jenkinson, M.A., Fellow of Trinity College and 

 Librarian of the University of Cambridge, for enabling 

 me, during a residence in Cambridge, to make full use of 

 the splendid library under his direction ; to Professor 

 Blosch, Librarian of the fine Stadt Bibliothek of Berne, 

 and to the Authorities of the University Library of Berne 

 for allowing me the freest use of the books under their 

 charge. 



Finally, I would appeal to my fellow-workers to aid me 

 by communicating to me any errors in this book which have 

 neither been noticed amongst the corrigenda nor corrected 



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