146 ELEMENTARY PHYSIOLOGY. [XIII. 



DEMONSTRATIONS. 



1. Experiment of Stannius. 



2. The an,tagonistic effects of muscarin (orpilocarpin) 

 and atropin on the heart. 



3. The action of the mammalian heart. 



4. Pneumogastric inhibition in the mammal. 



5. Sounds of the heart, 



6. Endocardial pressure of frog. 



7. Effect of constant current and of successive in- 

 duction shocks on the ventricle apex. 



8. Rhythmical contraction of ventricle apex under 

 pressure. 



9. Latent period of ventricle apex. 



