256 Scientific Proceedings (129) 



The method as now modified has been successfully applied 

 to human, dog, ox, rabbit, guinea pig and pigeon blood. 



TABLE II. 



Table for the conversion of c.c. of N/100 Na 2 S 2 0 3 into mg. of glucose per c.c. 



0.01N Na 2 S 2 0 3 



Glucose 



0.01N Na 2 S 2 0 3 



Glucose 





mg. per c.c. 





mg. per c.c. 



c.c. 





c.c 





0.50 



0.25 



4.0 



1.19 



1.0 



0.39 



4.5 



1.33 



1.5 



0.52 



5.0 



1.46 



2.0 



0.66 



5.5 



1.59 



2.5 



0.79 



6.0 



1.73 



3.0 



0.92 



6.5 



1.76 



3.5 



1.06 



7.0 



2.00 



121 (2081) 



On the nature of the rhythmic contractions in the stomach 

 and intestine. 



By ALBERT KUNTZ and J. EARL THOMAS. 



[From the Departments of Anatomy and Physiology, St. Louis 

 University School of Medicine, St. Louis, Mo.] 



Rhythmic contractions in the stomach and intestine persist 

 following the administration of nicotin in doses sufficient to 

 prevent conduction through synapses. Attempts to account for 

 these contractions solely as responses to nervous impulses have 

 resulted in confusion. Certain experimental data recorded by 

 Magnus ('05), 1 Gunn and Underhill ('14), 2 and Alvarez and 

 Mahoney ('22) 3 indicate clearly that excised pieces of the in- 

 testinal musculature may execute rhythmic contractions in the 

 absence of nervous influences. The present paper embodies a 

 preliminary statement of the results of a further investigation, 

 through the use of nicotin in massive doses, of the rhythmic 



1 Mangus, R., Arch. f. d. gesammt. Physiol., 1905, cviii, 1. 



2 Gunn, J. A. and Underhill, S. W. F., Quart. Jour. Exp. Physiol., 1914, 

 viii, 275. 



3 Alvarez, W. C. and Mahoney, L. J., Amer. Jour. Physiol., 1922, lix, 421. 



