PREFACE 



THIS book contains precise directions for performing most 

 of the fundamental experiments in Physiology, except 

 those of a chemical nature. Most of the experiments described 

 can be carried out by the student himself, working either in 

 class or separately, but some at least in this country can 

 only take the form of demonstrations. A certain number are 

 intended for advanced students, although no attempt has been 

 made to mark these off from the rest. Such selection can best 

 be made by the teacher of the subject, and would be regulated 

 by the requirements of his students and the nature of the 

 examinations for which they are working. 



I am indebted to Dr JOHN TAIT and to Dr W. W. TAYLOR 

 for suggesting emendations in some of the descriptions, and to 

 Mr R K. S. LIM for furnishing the drawings of Figs. 64, 73, 

 and 74. 



UNIVERSITY, EDINBURGH, 

 October 1918. 



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