PREFACE 



This book is addressed primarily to students of agriculture 

 who may wish to obtain some knowledge of the simpler 

 physiological processes as they occur in farm animals. It is 

 hoped that it may be of use also to veterinary students. 

 The second volume, by Professor Wood, dealing with animal 

 nutrition, will be published shortly. 



I take this opportunity of expressing my indebtedness to 

 all those who have co-operated with me. Professor Wood 

 has kindly read the proof sheets and made various useful 

 suggestions. Mr E. T. Hahian, besides contributing the 

 chapter on the sense organs, has also read the proof sheets 

 and given me the benefit of his criticism ; moreover, all those 

 drawings which are new are the work of his hand. Mr 

 R. H. Adie and Lieut-Colonel W. A. Wood have read the 

 chapter on the locomotor organs and given me the advantage 

 of their special knowledge. I wish to offer my grateful thanks 

 also to those authors and publishers who have allowed me 

 to reproduce illustrations from other works; in particular 

 I desire to mention Sir Edward Sharpey Schafer and Messrs 

 Longmans, Green and Co. I am under much obligation to 

 Major-General F. Smith for the use I have made of his Manual 

 of Veterinary Physiology, published by Messrs Bailliere, 

 Tindall, Cox and Co. Lastly I wish to thank my friend and 

 colleague, Mr K. J. J. Mackenzie, for his constant encourage- 

 ment and kindly interest, and for the ready help which he 

 has always placed at my disposal. 



F. H. A. M. 



November, 1919 



a3 



