HARVEY'S WORK 59 



which is pulsating near the bandage. At the moment 

 of slackening the blood will be felt to glide underneath 

 the finger. Moreover, he on whose arm the experiment 

 is being made is distinctly conscious of a sensation 

 of warmth as the bandage is slackened. He feels too 

 something, namely, a stream of blood, suddenly making 

 its way along the course of the vessels and diffusing 

 itself through the hand, which at the same time begins to 

 feel hot, and becomes distended." 



' In connection with the tight bandage we noted that 

 the artery was distended and pulsated above the bandage, 

 but not below it. In the case of the moderately tight 

 bandage, on the contrary, we find the veins below, never 

 above, the bandage, swell, and become dilated, while the 

 arteries [below it] shrink. ..." 



The moderately tight bandage then renders the veins 

 turgid and distended, and the hand full of blood. I ask, 

 therefore, whence is this ? Does the blood that accumu- 

 lates below the bandage come through the veins, or 

 through the arteries, or does it pass by certain hidden 

 pores ? Through the veins it cannot come. Still less 

 can it come through any system of invisible pores. It 

 must needs then arrive by the arteries, in conformity 

 with all that has been already said. That it cannot flow 

 in by the veins appears plain from the fact that the blood 

 cannot be forced towards the heart unless the bandage 

 be removed, and when this is done, suddenly all the veins 

 collapse, and disgorge themselves of their contents into 

 the superior parts, the hand at the same time resuming its 

 natural pale colour. . . . Moreover, if a man has had his 

 arm thus bound for some little time with a moderately 

 tight bandage, so that it has not only got swollen and 

 livid, but cold, and if the bandage then is loosened, he 

 feels something cold make its way upwards along with 

 the returning blood. ..." 



