4 THE BUREAU OF SCIENCE 



Plate VI — Continued. racing page- 



Typical examples of amoebae and entamoebae, etc. — Continued. 



Fig. 4. Encysted form of Entamoeba coli, from the stool of 

 a healthy person. 



5. Motile form of Entani<eba histolytica, from the stool 



of an acute case of entamoebic dysentery. 



6. The "tetragena" type of motile Entavioeba histoly- 



tica, from a chronic case of entamoebic dysentery. 



7. The preencysted stage of Entamoeba histolytica, 



from a "carrier" case. 



8. Encysted form of Entamoeba histolytica, from a con- 



valescent case of entamoebic dysentery. 



Plate VII 20 



Section of large intestine of monkey, showing a single Balanti- 

 dium coli suis under the healthy intestinal epithelium. 



Plate VIII 20 



Section of a mesenteric lymph gland of monkey, showing several 

 Balantidium coli hominis in the edge of the glandular tissue. 



Plate IX : 20 



Section of the large intestine of a man dead from balantidial 

 dysentery. An early stage of a balantidial abscess in the 

 submucosa. 



Plate X 20 



Fascioletta ilocana Garrison, an intestinal trematode of man. 

 Fig. 1. Photograph. A group of 8 specimens of Fascioletta 

 ilocana, natural size. 



2. Photomicrograph of type specimen from ventral sur- 



face. Stained with carmine and picric acid. En- 

 largement about 18. 



3. Semidiagrammatic drawing, showing anatomy. 



4. Photomicrograph of longitudinal section in median 



line. Stained with carmine and picric acid. En- 

 largement about 20. 

 b. Semidiagrammatic drawing, showing apparent struc- 

 ture and relations of cirrus and cirrus pouch. 



Plate XI 22 



Treponema pertenuis Castellani of yaws. 



Figs. 1-3. T. pertenuis from human yaws lesion. X 1500 



(approximate). 

 Fig. 4. T. pertenuis from human yaws lesion, x 1200 

 (approximate) . 



5. T. pertenuis from capillary tube culture, showing 



agglutination and probable longitudinal division. 

 X 1200 (approximate). 



6. Same, x 1500. 



Plate XII 22 



The specific cure of yaws with dioxy-diamido-arsenobenzol. 

 Fig. 1. Case I before treatment. 



2. Same, twelve days after treatment. 



3. Case II before treatment. 



4. Same, nine days after treatment. 



