AN ANATOMICAL STUDY ON THE 



heart, by a transfer accomplished from the great 

 veins, since it passes through the arteries beneath 

 the ligature, not through veins, and arteries never 

 receive blood from veins except by way of the left 

 ventricle of the heart. Nor could any such an amount 

 be drawn from a single vein anywhere, a bandage 

 being applied above it, especially with such force, 

 such an amount, or so easily and quickly, except 

 by the beating power of the heart in the manner 

 described. 



If these things are so, we may very readily compute 

 the amount of blood and come to some conclusion 

 on its circular motion. If, for instance, in phle- 

 botomy, one were to let the blood flow with its usual 

 force and rate for a half hour, there is no doubt but 

 that the greater part of it would be drained off, 

 practically emptying not only arteries but also the 

 great veins, and that fainting and syncope would 

 follow. It is reasonable to assume that as great an 

 amount of blood as is lost in this half hour's time, 

 passed from the great veins through the heart to 

 the aorta. Further, if you figure how many ounces 

 of blood flow through a single arm, or pass under 

 a medium bandage in twenty or thirty heart-beats, 

 you will have a basis for estimating how much 

 flows through the other arm in the same time, 

 or through both sides of the neck, or through 

 both legs, and through all the other arteries and 

 veins of the body. Since all these are continually 

 supplied with fresh blood, which must flow through 



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