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The course of the yein may easily be determined by pressirig upon it, 
when the part furthest from the heart will become distended, by the blood 
accumulating in its channel. The spot we select for opening the vein, is nine’ 
or ten inches from the angle of the jawbone, and the amount of blood to be 
abstracted varies from one to four quarts. It is best to press the edge of the 
receiving vessel against the cut end of the lower part of the incised vein. 
When sufficient blood is removed, a pin is passed through the edges of 
the incised wound. Horse-hair is then wound round the ends of the pin in 
the form of a figure 8. In six days or so, the pin may be removed. 
