ADVANCED COURSE 



IKTRODUCTION 



It will be presupposed that students who take the following lessons have 

 already been through the elementary course. The order in which the 

 subjects are treated is the same as that already adopted. The instructions 

 given will be mainly practical; theoretical matter on which they depend, 

 or to which they lead, is, as a rule, too lengthy to be discussed in a short 

 mantial like the present volume. The Appendix contains a description of 

 various instruments which are not generally contained in sufficient numbers 

 in a physiological laboratory to admit of each student being able to use them 

 in a class. It also contains a description of certain methods of research 

 which should always be shown in demonstrations, though there may be 

 practical difficulties in allowing each member of the class to perform the 

 experiments. The description of the phenomena of polarised light and their 

 application has been considerably extended, and a section added on osmosis, 

 a subject which is becoming of more and more importance to the student of 

 physiology. 



The few experiments in which living animi»lR are employed will also 

 necessarily be of the nature of demonstrations. 



