( 679 ) 



7. Rabbit 2 K.G. 



For three days totally 2,9 grams of soot is brought into the stomach 

 with the catheter; killed after 24 hours. 

 Results: as in experiment 6. 



8. Rabbit 2 K.G. 



A suspension of 2 grams of carmine in water is brought into the 

 stomach with a catheter; killed after 48 hours. 



Results: Except in the intestines, carmine is nol to be found. 



9. Rabbit 2.75 K.G. 



50 grams of charcoalpowder, suspended in water, is brought into 

 the stomach with the catheter; killed after 24 hours. 

 Results: as in experiment 6. 



10. Rabbit 3 K.G. 



A suspension of 40 grams of charcoalpowder is brought into the 

 stomach with the catheter: killed after 24 hours. 



Results: Macroscop. lungs show black spots especially after dissect- 

 ing them; the bronchial glands arc faintly pigmented; microscop. 

 fine carbon particles and also coarser carbon pieces can be seen 

 in many alveolars. Carbon can be shown neither in the larger 

 bronchi, nor in the trachea; the bronchial glands show some 

 pigment-cells. 



The presence of the coarser carbon parts in the alveolars made 

 the diagnose "aspiration" very easy. 



11. Rabbit 5 K.G. 



After tracheotomy 9 grams of carmine is brought into the stomach 

 with the catheter. About 18 hours afterwards the animal chokes, as 

 phlegm has gathered in the canule. 



12. Rabbit 4.25 K.G. 



After tracheotomy 8 grams of carmine is broughl into the stomach 

 with the catheter; the animal is killed after 24 hours. 



13. Rabbit 3.5 K.G. 



After tracheotomy 8 grams of carmine is brought into the stomach 

 with the catheter. 



Killed after 48 hours. 



Results of the experiments 11, 12 and 13: Except in the intestines 

 I could find nowhere carmine in the body ;it the microscopical inves- 

 tigation; in the lungs and bronchial glands black pigment is present. 



14. Cavy 400 grams. 



The oesophagus was freeprepared and cut through. Through the 

 lower [>art 5 gram of Vermillion was brought into the stomach. 

 Then the lower part of the oesophagus was bound up whereas the 



4(i 



Proceedings Rcyal Acad. Amsterdam. Vol. IX. 



