MODE OF INGESTION 



tl 



In the rabbit killed after seven hours an unusual 

 number of lymphocytes containing minute dark 

 granules could be observed in the epithelium and even 

 in the lymph follicles. But it could not be conclusively 



Fig. 31. 



Microscopical section of a Feyer's patch from a rabbit which had 

 had soot administered with its food for three weeks. 



Stained with eosin only. (From a camera lucida drawing; 1/12 in. 

 objective.) 



The section shows glandular lymphocytes and masses of ingested 

 soot. 



stated that they were carmine particles. The appen- 

 dices of the rabbits killed after 21 and 42 hours pre- 

 sented normal appearances. 



