PREFACE 



In writing this book my aim has been to give a short account of those 

 experiments which can be carried out by students during classes, 

 together with a selection of experiments suitable for class demonstra- 

 tions. In the selection of the experiments I have been largely guided 

 by the course of Advanced Practical Physiology given by Professor 

 Halliburton at King's College, which was based upon the ' Syllabus 

 of Lectures ' published by Professor J. Burdon Sanderson in 1879, 

 though in several respects I have modified and added to this course. 



The illustrations are for the most part new. For permission to 

 reproduce several of the figures of instruments I wish to thank 

 Professors McKendrick, Yeo, Halliburton, and Waller. The 

 source of these figures is indicated in each case. The reproductions 

 of the tracings are all new and taken from tracings specially prepared 

 for the purpose. With very few exceptions they are all reproduced 

 the same size as the originals, so that the measurements indicated in 

 the text directly apply to the figures. 



Those modifications of many of the usual forms of apparatus 

 figured in the text have been made for me by Mr. C. F. Palmer, and 

 are especially designed for class work. 



The plan of the book varies slightly from that adopted by Professor 

 Schafer and Professor Halliburton in their ' Essentials.' I have 



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