FIG. 64. Action of the museular coat of the large intestine, as shown by 

 the X-rays. After Hertz 



The lower border of the ribs and the upper border of the pelvis are sketched. 

 Black shadows are the food masses in the lower small and the large intestine. 

 Breakfast about 7 A. M. For some time before noon the food shadows showed 

 no change (12 M). Shortly after 12 luncheon was taken. At 12.20 the food 

 accumulated in the lower small intestine had been discharged into the ascend- 

 ing colon, which it distends. At 12.23 the distal end of this food mass was con- 

 stricted off and later (12.25) passed along the transverse colon, where divisive 

 movements take place (12.26) ; but at 12.31 the distal part of this mass is sepa- 

 rated and rapidly passed through the descending colon (12.31 +) to the sigmoid 

 flexure (12.31++) 



129 



