PRESENCE OF BACTERIA 



61 



of the appendix of a healthy rabbit (1913). Though 

 I have examined the appendices in over a score of 

 rabbits, some in England and some in China, and I 

 have never failed to find these crowds of bacilli. (Figs. 

 1, 26, 29 and 30.) 



f 



1^ 



Fig. 26. 



Two portions of subepithelial lymph nodes in a healthy rabbit's 

 appendix showing ingested bacilli. (From a camera liicida drawing; 

 eosin-Gram stain; 1/12 in. objective.) 



I was not then aware of previous work on the sub- 

 ject, but on tracing the literature subsequently, I found 

 that as far back as 1890 Dr. Armand Ruffer had 

 described and beautifully illustrated the presence of 



