INDEX 115 
Induction shocks, break, equation for, 35. 
comparison of make and break, 102. 
make, measurement of, 94. 
equation for, 99. 
measurement of historical, 14. 
Edelmann method, 20. 
v. Fleischl method, 18. 
Hoorweg-Giltay method, 21. 
Kronecker method, 16. 
Meyer-Fick method, 15. 
Pfluger method, 14. 
Wertheim-Salomonson method, 
18. 
sources of variation in, 13. 
stimulate at cathode, 72, 107. 
Inductorium, du Bois Reymond type, 3. 
principle of, 4. 
calibration of, apparatus required, 23. 
procedure, 28. 
for break shocks, 55. 
for make shocks, 94. 
in region of iron core, 58. 
"standard," 23, 88. 
Berlin standard, 88. 
shortcomings of, 92. 
structure of, 3. 
effect of on strength of shock, 13. 
relation to determination of specific stim- 
ulus, 78. 
Iron core, effect of on strength of shock, 13, 43. 
in critical region, 47. 
magnetization of, 43. 
correction for, 46. 
Key, automatic, necessity for, 61. 
knife-blade, construction of, 63. 
advantages of, 64, 67, 70. 
operating device for, 65. 
