( 682 ) 



31. Cavy 820 grams. 



4 com. of ultramarine is administered as in experiment 30. 



Killed after 16 1 /, hours. 



Results: No ultramarine can be found, except in the intestines. 



32. Cavy 360 grams. 



4 ccm. of ultramarine is brought into the intestines as in expe- 

 riment 30. 



After this the animal is carefully wrapped up so that it can get 

 no faeces into its mouth and cannot lick itself. 



After 6 hours the animal is decapitated abruptly in order to pre- 

 vent vomiting in agony. 



Results: the ultramarine is in the small and in the large intestines, 

 also somewhat proximal from the place of injection. 



In the stomach, in the oesophagus, in the pharynx and in the 

 phlegm of the chief bronchi no ultramarine can be traced. 



33. Cavy 750 grams. 

 Treated as in experiment 32. 

 Killed after 16 hours. 



Results: as in experiment 32: here some grains of ultramarine 

 are in the stomach. 



34. Cavy 475 grams. 

 Treated as in experiment 32. 

 Killed after 12 hours. 

 Results: as in experiment 32. 



35. Cavy 540 grams. 

 Treated as in experiment 32. 

 Killed after 6 hours. 

 Results: as in experiment 32. 



(March 28, 1907). 



