TORSION OF THE DOUBLE COLON 



255 



Referring first to the course normally taken by the 

 colon, p. 246, and then expressing it diagrammatically, a 

 transverse section of the abdomen in front of the base of 



Fig. 22. 



-Diagram illustrating the Relative Positions 

 OF THE Normal Double Colon. 



This is viewing the supposed section from behind, and shows 

 I, 2, 3, and 4 — the first, second, tliird, and fourth portions 

 respectively of the bowel. The black dots a, a, indicate the 

 glands and vessels on the inferior face of the first and fourth 

 portions. Similar dots b, b, indicate the glands and vessels on 

 the superior face of the second and third portions. R, Right 

 side of abdomen ; L, left side of abdomen. 



the caecum will give some such picture as that illustrated 

 in Fig. 22. 



With this diagram before us, we may then follow 

 Cadeac's explanation of twist from left to right. It is in 

 this direction, he assures us, that torsion of the double 



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