TORSION OP THE DOUBLE COLON 



257 



muscular band is seen running on the plain, unpuckered 

 face of the double colon, it may be predicted that the 

 bowel is twisted, though to all appearances it may seem 



Fig. 23. — Diagram illustrating the position of the Four 

 Divisions of the Double Colon when Incomplete Twist 

 — THAT is, Twist of half a turn — has occurred from 

 Left to Right. 



I, 2, 3, and 4, The first, second, third, and fourth portions, respec- 

 tively, of the bowel ; a, a and b, b, the vessels and glands ; 

 R, right side of abdomen ; L, left side of abdomen. The arroio 

 in the diagram indicates the dinction of the twist. 



to be in its normal position. The muscular band and 

 plain, unpuckered surface tells the tale. This is found on 

 the upper surface of the intestine (the animal in the 



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