INNERVATION OF HEART AND BLOOD-VESSELS 577 



APPARATUS 



Normal saline. Bowl. Towel. Pipette. Glass plate. 

 Inductoriurn. Key. Wires. Dry cell. Electrodes. 

 Needle electrodes. Frog-board. Electromagnetic signal. 

 Heart-holder. Kymograph. Glass tube for oesophagus. 

 Two muscle levers. Solutions of nicotine (0.2 .per cent), 

 atropine (0.5 per cent), muscarine (a trace in normal salt 

 solution). Curare. Ether. Sponge. Glass jar. Ver- 

 tebral saw. Web-board. Fine pins. Microscope. Frog, 

 the sciatic nerve of which has been severed four days. 

 Millimetre rule. Silk thread. 



37 



