SYPHILIS AND YAWS 61 



bodies and their oscillating granules distinguished them from leuco- 

 cytes. As to the bodies 10 and //in Fig. 18, the partial capsule at 

 their upper end is probably the remains of host-cells, and the 

 evidence detailed in the description strongly supports the view that 

 the curved greenish body near the group of oscillating granules at 

 o divided into two parts. The curious body Q in Fig. 18 looks at 

 first sight something like a zoogloea mass. It was not that, but all 

 the globules, etc., shown in the sketch were on the surface of a dull 

 colourless core. In view of the later work of Schaudinn and 





FIG. 19. PART OF A SECTION THROUGH A RABBIT'S CORNEA SEVENTY-TWO 

 HOURS AFTER INOCULATION WITH SOME MATTER FROM A HARD CHANCRE. 

 ( x 500 diameters.) 



It shows hyaline bodies within some of the cells ; a few leucocytes are also 



present. 



MacLennan, I think that the various minute bodies are involution- 

 forms of Schaudinn's organism. 



The minute bodies, Fig. ^15, 4, and Fig. 17, s, show traces of 

 chromatin, and I think they may ultimately prove to be a stage in 

 the development of the active spironema, which is only abortively 

 produced in the tertiary lesion. One great interest attaching to the 

 cell-inclusions, etc., in syphilis is that ^homologous structures occur 

 in cancer, small-pox, and in the later stages of the vaccinated cornea. 

 This latter fact led me to try the effect of inoculating a rabbit's 

 cornea with material from a hard chancre, to compare it with the 



