e 



The practical work in this book is for the most part 

 arranged in Lessons which, with the Demonstrations, 

 occupy the Student for two hours. But in some cases 

 this method has not been found convenient and a Les- 

 son includes the whole of the work in a definite division 

 of Physiology which may occupy the Student for either 

 more or less than two hours. For the modification of 

 the major arterial scheme, given in this edition, I am 

 indebted to Dr H. Hartridge. 



L 



^52422 



12 



