H2 BIO-CHEMICAL JOURNAL 



Attention has been called in an earlier paper to the fact that a 

 considerable degradation of the small intestine takes place in the first 

 four hours of incubation with water, which is followed by a period of 

 small change. This phenomenon is discussed in detail in Part VI. 

 The following experiment shows that the changes of electrical 

 conductivity are not parallel to this change ; there is no sudden 

 increase in the first four hours, followed by a period of no change. 



The experiment was carried out with a suspension of 5 grs. tissue 

 in 50 c.c. water ; temperature 40. The conductivity of the boiled 

 extract was also determined. 



These results show a continuous decrease, which is due probably 

 to changes other than nitrogenous degradation. 



REFERENCES 



1. v. Bergmann and Langstein, Hofmeister's Beitrage, 6, p. 27, 1904. 



2. Emden and Knoop, Hofmeister's Beitrage, 3, p. 120, 1902. 



3. Langstein, Hofmeister's Beitrage, 3, p. 373, 1902. 



4. Nolf, Extraits des archives de biologic, vol. 20, 1903. 



5. Abderhalden and Oppenheimer, Hoppe-Seyler's Zeitschrift, 42, p. 155, 1904. 



6. Neumeister, Zeitschrift fiir Biologic, 24, p. 272, 1888. 



References to analyses of small intestine during absorption of food : 



Neumeister, he. cit. 



Zunz, Hofmeister's Beitrage, 3, p. 339, 1902-3. 



Kutscher & Seeman, Hoffe-Seyler's Zeitsc hrift, 34, p. 528, 1904. 



