( 677 ) 



proximal direction, as e. g. GrRÜTZNER 1 ) describes this for line particles 

 in the intestines and as Kast 2 ) has also shown for the oesophagus, 

 or, had the animals eaten their own faeces? 8 ) 



In order to solve this question, four cavies were carefully wrapped 

 in a bandage, after ultramarine had heen brought into the intestines 

 so that eating the faeces was quite impossible (experiment n°. 32 35). 

 It now appeared that the ultramarine had come some way proximal 

 from the place of injection, but in the oesophagus, in the pharynx and 

 in the chief bronchi no ultramarine was discernible. 



From this 1 suppose that the ultramarine had simply come into 

 the pharynx owing to the eating of faeces and not through a proximal 

 motion of the fine particles 4 ). 



From my experiments I conclude that the pulmonary anthracosis 

 does not originate through taking up fine particles from the intestines. 



It may be acceptable a priori, that tine particles can be taken up 

 in the intestinal mucous membrane and can get into the lungs along 

 ductus thoracicus and right heart, but this phenomenon is with 

 regard to the pulmonary anthracosis of not so much importance, as 

 Vansteenberghe and Grisez have supposed. Evidently these investi- 

 gators have given sufficient attention neither to the physiological 

 anthracosis of the test-animals, nor to the aspiration of the coloured 

 particles which cannot be quite prevented, not even, as is mentioned 

 above, by direct injecting the matters into the intestines. 



If the physiological anthracosis originated by taking up carbon 

 particles from the intestines, not only the mesenterial glands but 

 also the marrow and the milt had to contain much carbon pigment, 

 because firstly it cannot be understood how carbon parts should 

 pass the mesenterial glands without leaving distinct traces of their 

 passing behind them and on the other hand there is no possible 

 reason why the carbon particles to a great extent should not pass 

 through the capillaries of the lungs and deposit in the marrow and 

 the milt. 



i) Archiv. f. d. Ges. Physiol. (Pfluger). Bd. 71. 



2) Berliner Klin. Wochenschr. 1906, N° 28. 



:5 ) When starving cavies and rabbits usually eat their own faeces, it also often 

 occurs when they have sufficient food. 



Swirski : Archiv f. exper. Path, und Pharni. 1902, Bd. 48. 



4 ) Uffenheimer, after injecting a suspension of prodigiosusbacilli into the rectum 

 of rabbits, noticed a motion of the bacilli in a proximal direction; they ascended 

 up to the pharynx and from thence they were sometimes aspirated into the lungs. 

 Deutsche Med. Wochenschr. 1906, N<>. 46. 



