1907.|  Post-tetanice Tremor in Several Types of Muscle. 49 
Fie. 16.—Gastrocnemius, frog. Sciatic nerve suddenly heated by hot NaCl 75-per-cent. 
solution. Bell-crank lever. Time in half-seconds. Periodicity of tremor, 4 per 
second. (Facsimile.) 
ee as Seconds. 
LLL... 1. 
Fie. 17.—Gastrocnemius, frog. Ritter’s “opening tetanus.” LBell-crank lever; no 
weight. lcm. of sciatic nerve had “constant” current (5°4 1075 ampere) ascending 
for 5 minutes through non-polarisable electrodes. To be read from left to right. 
Time in seconds. Periodicity at beginning of tremor, 5 to 6 a second. (Facsimile.) 
Sohe 
Sonn 
Fic. 18.—Sartorius, frog, completely immersed in Biedermann’s fluid. To be read from 
left to right. Time in half-seconds. Average periodicity, 4 per second. (Facsimile.) 
) 
All of these tremors are more or less irregular. 
Now all these tremors are, as to average periodicity, of the same order as 
VOL. LXXX.—B. | E 
