202 LEON J. COLE. 



contractions of the intestinal ceca in the legs are more or less 

 irregular. There were usually a few (two to four) peristaltic 

 waves in one direction, and then they would change and go the 

 opposite way for an equal time. In some cases the contraction 

 appeared to start at one point and pass from there in both direc- 

 tions along the intestine. In a specimen which had been mounted 

 for some time under a cover glass these peristalses recurred at 

 intervals of two or three seconds. 



LITERATURE. 

 Cole, L. J. 



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