Transmission-time of Reflexes in Spinal Cord of Frog 



35 



Exp. 4. (L. Gastroc). Sept. 17, 1906. Room temp. 16' C. Large frog in- 

 jected with I minim 0*1 per cent. liq. strych. two hours before ; spasms 

 now general when any part of skin touched. The right gastrocnemius 

 had already given a few weak same-side reflex responses, which were 

 recorded, but no crossed response could be obtained from it, nor could 

 this be obtained at first with the second muscle. 



All the responses, direct and reflex, were weak ; the reflex ones were 

 prolonged, but not serial. 



Exp. 16. (R. Gastroc). Oct. 4, 1906. Room temp. 16° C. One minim 01 

 per cent. liq. strych. injected after preparation of the nerve and muscle 

 and after -taking three records with the cord normal (none of which 

 showed a reflex eftect) of responses to a fairly strong stimuli. Nor 

 did two records show it, taken respectively five and ten minutes after 

 the injection. Five minutes later still it was present. 



All the electrical effects were weak. The reflex effect in the last three re- 

 sponses was two to three times as long as the direct effect. In the first 

 two it was of about the same duration. The contractions were all feeble. 



