Fig. 1. Experiment Bi- 



Frog. Acute experiment. Right sympathetic chain extirpated (under narcosis of 

 ether) from N. V. to N. XI inclusive. Curves registered half an hour after the resec- 

 tion. Electrical stimulation of the cross section of the caudal part of the spinal 

 cord with "make induction shock". In primary circuit H^o volts. In secondary 

 circuit, except the resistance of the substance of the spinal cord, a resistance of 

 60.000 ohm, distance of coils 50.5 mm., small inductorium. Loading of the muscles 

 about 12 grams. Curve 1 of left gastrocnemius. Curve 2 registered by right 



gastrocnemius. 



Fig. 2. Experiment G 28. 

 Frog. Acute experiment, i^iö^/i^ sympathetic chain extirpated (under narcosis of ether) 

 from N. IV to N. XI inclusive. Curves registered 45 minutes after resection. Tem- 

 perature room 11^/4° C. Mechanical stimulation of the spinal chord several seg- 

 ments above the origin of the roots of the Nn ischiadici by the prick of a pin. 

 Time curve =V6(i"- Loading of the muscles about 12 grams. Curve! of J'ightkg. 



curve 2 of left leg. 



Fig. y. Experiment B 2. 

 Frog. Acute experiment. Right sympathetic chain extirpated under narcosis of ether 

 from N. IV to N. XI inclusive. Curves registered 32 minutes after resection. Mecha- 

 nical stimulation of the spinal cord far above the origin of the roots of the iegnerves. 

 Loading of the muscles about 12 g. Curve 1 of left gastrocnemius, curve 2 of 



right gastrocnemius. 



