PROTOZOA AND DISEASE 



They are certainly of kindred nature to those I described in cancers 

 in I8Q2, 1 but it is to be noted that on the warm stage these bodies 

 from the tertiary lesion exhibited what could only be vital processes. 

 Each group of oscillating granules could only represent a focus 

 where a process equivalent to mitosis was going on. The mass 



FIG. 17. PART OF THE EPIDERMIS IN THE SAME SECTION OF A SPREADING 

 SECONDARY SYPHILITIC ULCER. (Reduced from a camera drawing made 

 with Leitz's drawing eye-piece and a jVinch oil-immersion lens.) 



, Horny layer ; , normal nucleus of epidermal cell ; c and d, nuclei of epidermal 

 cells that are breaking up ; u, v, w, x, y and z, various stages of the bodies 

 described as protozoa by the author in 1 895. Two bodies resembling leucocytes 

 are present among the minute bodies at z. 



invading the epithelial cell shown in Fig. 18, 2, contained three 

 typical 'bird's-eye bodies,'^ and the cluster of granules in violent 

 oscillation at o marked the spot where another bird's-eye body 



1 Pathological Society : ' Cancer of the Septum Nasi caused by Psorosperms,' 

 Brit. Med. Journ., December 24, 1892. 



- Bird's-eye bodies, known also as ' cancer-bodies,' and ' Plimmer's bodies,' 

 can be obtained by scraping a slice of most cancers. Their definite capsules and 



