■1 



Fig. XIX. Tracing of the local volume registered with air-cushions above the exten- 

 sor muscles of the lovfer part of the arm and above the muscles of the calf. 

 A that on the extensor muscles of the arm, 

 B that on the muscles of the calf. 

 During the sum, the air-cushion on the muscles of the calf notes down the usual 

 volume-curve, as is represented in fig. XV for the fingers. The curve on the ei.tensor 

 muscles rises as a consequence of the tension of the muscles which takes place. 



(WiABDi BECKMiN, Sept. 1898). 



'aAA/wA.A.A^/^./uA^^^^-^'^^'^ 



Fig. XX (Winkler, Sept. 1898). Fig. XXa (Wiabdi Beckman, 

 Sept. 1898). Fig. XX* (Langelaan, Sept. 1898). Tracings registered 

 with immovable air-cushions on the muscles of the neck. The tracing 

 rises at every inspiration, because the head threatens to be thrown a. 

 little backwards through the tension ot these muscles. This happens 

 in a far greater measure during the sum. 



Fig. XV. Change of the volume of the fingers registered with the 

 caoutchouc air-cylinder of Hallion and Comte. 



During the sum (multiplication : 17 and 19) this curve goes 

 down after a short slight rising. The volume of the lingers decreases 

 accordingly (Winkler, June 1898). 



Fig. XVI. Change of the pressure of the blood in the capillar ia 

 registered with Mosso's sphygmomanometer. In fig. XV la the oppo- 

 sing pressure is i 30 mM. Hg. 



During the sum the tracing rises and the deviations increase. In 

 fig. XVU the opposing pressure is ± 50 mM. Hg., that is the op- 

 timum, with which the greatest deviations are obtained. During the 

 sum the tracing rises, but the deviations become smaller. So the 

 blood-pressure increases during the sum. (Winkler, Sept. 1898). 



