vi EXPERIMENTAL PHYSIOLOGY 



made use of three different types : a small type employed in describing 

 apparatus or the method of carrying out an experiment ; a medium 

 type forming the main body of the text ; and a heavy type used in the 

 accounts of the more fundamental experiments which are fitted for 

 elementary classes. It seemed better to mark off these elementary 

 experiments in this way rather than to separate the book into an 

 elementary and an advanced course., The number of elementary 

 experiments given is only small, and a detailed list of them will be 

 found on p. xiv. 



To Professor Halliburton and to Professor Schafer my best 

 thanks are due for the many suggestions and criticisms with which 

 they have aided me during the preparation of the book. To Dr. 

 A. E. Eussell, Medical Eegistrar, St. Thomas's Hospital, I am 

 especially indebted for many valuable suggestions and alterations, and 

 for his assistance in reading and correcting the proofs. 



T. G. BRODIE. 



St. Thomas's Hospital, December 1897. 



