1907.| Post-tetane Tremor in Several Types of Muscle. 45 
Thus, while in the frog’s gastrocnemius it is about six per second, in the 
hyoglossus it is only 2 to 2°5 a second; ratio 3:1. 
Fig. 9.—Gastrocnemius, toad, curarised. 5 grammes. FBell-crank lever. Stimuli by 
Neef’s hammer (side-wire). Time in half-seconds. Tremor maintained for 
15 minutes. Average periodicity, 2°5 to 3.asecond. (Facsimile.) 
ae esiieelssieleis delsedels ed Malus seliseisieie stsielsisicl 
Fie. 10.—Diaphragm, rabbit (pithed, phrenics cut). “ Spontaneous” tremor recorded for 
# hour. Time in half-seconds. Lever as in fig. 1; no weight. Periodicity at first 
10 a second; later, 5asecond. (Facsimile.) 
HTT TT NY ANI | TSA PHT FTTH TOTES ATT TT TIT UAT YHAMTRH NANNY ANT THAT AN TACT! SONY TY HANTS TT IT, STAT 
Ly 
Fic. 11.—Hyoglossus, frog. Direct stimulation ; no weight. Neef’s hammer (side-wire). 
Time in half-seconds. Tremor. Periodicity, 2 to 3 a second. 
This difference is interesting in the light of the well-known difference in 
the number of stimuli necessary to cause complete tetanus in the gastro- 
enemius and in the hyoglossus respectively, viz., 30 and 10 respectively, 
ratio 3:1, 
The post-tetanic tremor, no less than the genesis of their tetanus, proclaims 
