158 PROTOZOAN PARASITISM 



identical with either or both, its name will be sup- 

 planted. 



The writer (1915) studied trichomonads in the 

 vagina and mouth of the same woman and is of the 

 opinion that even if Trichomonas elongata (huc- 

 calis) is a valid species, Trichomonas vaginalis may 

 occur in the mouth. In direct preparation and in 

 culture the organisms from the two sources were in- 

 distinguishable. 



Wenyon observed the organism in pus from the ton- 

 sil and it has been seen in sputum, supposed to have 

 come from the lung, and in gangrenous abscesses of 

 the lung at autopsy. 



The writer (1915 and 1922), Ohira and Noguchi 

 (1917), Hogue (1926), Hinshaw (1926-1927), and 

 others have cultivated this organism in a variety of 

 media, particularly in blood serum diluted with phys- 

 iological saline solutions in deep columns of the 

 tubed medium or as supernatent fluid on the egg 

 slant of Boeck and Drbohlav, as given in the cultiva- 

 tion of Endamoeba histolytica. 



Trichomonas elongata (huccalis) was found by 

 Hinshaw ( 1926) in 57 of 186 persons, all having pyor- 

 rhoea. He believes that it is very common in ad- 

 vanced pyorrhoea but not present in normal mouths, 

 and that culture methods are necessary to reveal its 

 presence in many instances. Hogue (1926) found it 

 in 9 of 50 persons selected at random, all by smear 

 preparation, and all hosts being the subjects of dis- 

 eased gums or teeth. Six of twenty-nine dogs bore 



