158 



THE SIGNS OF LIFE 







FIG. 59. Photographic record of the galvanometric deflections 

 in + and - directions, caused by (approximate) voltages of o.oi, 

 0.02, 0.03, 0.04, and again 0.03, through a circuit of (approximately) 

 one Megohm ( = 1000000 ohms). 



FlG. 60. Photographic record of the deflections caused by 

 break induction shocks of a Berne coil. Two trials at each strength. 



