?0 PRACTICAL PHYSIOLOGY 



at about 3, 13, 33 C., and recording the contractions on a slow 

 drum. (Fig. 72.) 



(Read the Nervous Control of the Heart in Text Book.) 



Lesson XV 



Apparatus, etc., given for Lesson XV. (p. 65). 



5. Induction coil with wires, electrodes, keys, etc. 6. Atropine sulphate 

 solution, 0-1 per cent. 7. Nicotine solution, O'l per cent. 8. Watch-glass. 

 9. Broken ice. 



