THORACIC DUCT IN MAN 



241 



occurred ii) instances in my series of 22, or in 27.27 per cent. 

 This type of thoracic duct has been described by two authors. 



The thoracic duct may be partially doubled and open into 

 the venous system of the right side. This type of duct is similar 

 to the diagram, figure 3. One author has described a duct of 

 this type. 



The thoracic duct may pass cephalad into the thorax on the 

 right side of the aorta as a single duct and divide into two branches, 

 one branch connecting with the venous system of the left side 

 and the other branch with the venous system of the r.'ght side. 

 This type of duct is similar to the duct in the diagram, figure 4. 

 Thoracic ducts of this kind have been described by six authors. 



TABLE 3 



Wendel's cases 



Termination 



NO. Of CASES 



Single 



Double 



Triple 



Multiple 



Boullard's cases, reported by Verneuil 

 Termination 



Single 



Double 



Triple 



Sixfold 



PER CENT 



52.941 



17.647 



5.882 



23.528 



TABLE 4 



MODE OF TEEMINATION 



P.A.RSONS 



AND Sargent's 



CASES : 



Per cent 



Single 77.50 



Double 17.50 



Triple 



Quadruple 5 .00 



Multiple 



Sixfold 



BOULLARD I 

 C.ISES : 



Per cent 



74.98 



12.49 



8.33 



4.16 



wendel's 

 cases: 



Per cent 

 52.941 

 17.647 



5.882 



23.528 



DAVIS cases: 



Per cent 



77.265 

 9.09 

 9.09 

 4.545 



THE AMERICAN JOURNAL OF ANATOMY, VOL. 17, NO. 2 



