PREFACE. 



THE objects of this Course are "twofold First, to train the 

 student in the investigation of the many problems of medical 

 science which he has afterwards to face, and to teach him to 

 observe, record, and describe the vital phenomena with which 

 he has to deal. 



Second, to give him a real and sound practical foundation 

 for his after study of Physiology, based upon his personal 

 experience and not upon the dicta of his teacher and text- 

 books. 



For this reason, the problems to be investigated and the 

 method of investigation are indicated here ; but the results 

 to be obtained and the conclusions to be drawn are left to the 

 student, who must, before all, learn to observe and to experi- 

 ment without preconceived ideas and without any anticipation 

 of a particular result, but with a mind open to accept whatever 

 result may be obtained. From the result he must attempt 

 the solution of the problem under investigation. 



The Course should be taken along with a Course of Lectures 

 and Demonstrations, and it should be so arranged that, in 

 each part, the practical work precedes the lectures. 



September, 1908. 



THE present Edition has been revised and re-arranged in the 

 light of the experience of the working of the class of General 

 Physiology during the past nine years. 



March, 1918. 



