PLATE 3 



EXPLANATION OF FIGURES 



Fig. 12 Scratching of the skin. Dog. 12 kilos. 9/5/191S. Ether. A marked 

 fall of blood-pressure. Respiratory movements practically unaffected. 



Fig. 13 Application of heat (boiling water) on the skin. Dog. 10 kilos. 

 25/10/1918. Brain compression and artificial respiration. A fairly marked fall 

 of blood-])ressure. 



Fig. 14 Electrical (strong) stimulation of the skin. Dog. 11 kilos. 

 14/5/1918. Ether. A very marked fall of blood-pressure. Respiratory move- 

 ments affected very slightly. 



Fig. 15 Scratching of muscle (right sartorius). Bitch. 10 kilos. 22/10/1918. 

 Ether. A fairly marked fall of blood-pressure. Respiratory movements show 

 no increase. 



Fig. 16 Kneading of muscles (lateral muscles of the right thigh). Dog. 10 

 kilos. 25/10/1918. Brain compression and artificial respiration. Gentle 

 kneading produced a pure fall (left) and violent kneading a fall followed by a 

 rise (right). Artificial respiratory* movements affected mechanically by the 

 manipulation. 



Fig. 17 Kneading of the small intestine. Same dog as in figure 16. A fairly 

 marked fall of blood-pressure. Artificial respiratory movements slightly affected 

 mechanically by the manipulation. 



Fig. 18 Simultaneous tracings of the carotid blood-pressure and the volumes 

 of kidney and hind limb. Dog. 10 kilos. 13/12/1918. Morphia and curare. 

 Artificial respiration. Strong stimulation of the right sciatic nerve caused 

 vascular constriction of the kidney, dilatation of the limb, and a rise of blood- 

 pressure. 



Fig. 19 Dog. 10 kilos. Ether. Effects of weak, moderate, and very 

 strong stimulation of the skin. The weak stimulation gives a pure fall, the 

 moderate stimulation a rise followed by a fall, while one very strong stimulation 

 gives a pure rise. 



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