418 HOYT. 



rather closely resemble non-motile amoeba 1 , specimens having positive 

 amoeboid movement at the time of examination have been recorded 

 separately from those showing non-motile or encysted forms only. 



Only 20 of the 300 patients whose stools were examined were admitted 

 with the diagnosis of dysentery. Ten of these cases were either hospital 

 corps men or medical officers stationed at the hospital, and in these cases 

 the diagnosis was based more on the discovery of motile amoeba? in the 

 stools than on any typical symptoms of dysentery. 



About 45 per cent of the remaining cases might be classed as "medical," 

 and these included fevers, chiefly malarial, dengue, and typhoid ; mental 

 and nervous diseases, diseases of the blood, intoxications and medical 

 affections of the chest and abdomen. Diseases of the eye, ear, nose and 

 throat were also placed in this group. Twenty-five per cent of the cases 

 were "surgical" and included wounds, contusions, fractures, abscesses, 

 tumors and the various surgical affections of chest and abdomen. Twenty- 

 five per cent of the patients were afflicted with venereal diseases. Among 

 all specimens of faeces examined, 104, or 34.6 per cent, contained motile 

 amoebae. Fourteen, or 70 per cent, of the specimens from the 20 patients 

 admitted with dysentery were positive for amoeba?. Eliminating these 

 20 cases there remained 84, or 30 per cent, which gave positive evidence 

 of motile amoeba? in the fasces, without showing at the time of examination 

 any symptoms which could positively be attributed to their presence in 

 the intestinal canal. 



The following percentages were obtained as the result of these 300 

 examinations : 



Motile amoeba? 34.6 



Motile flagellates 15.3 



Ova of Ascarls lumbricoides 10.0 



Ova of Trichoeephalus dispar 6.0 



Ova of Agohylostoma duodenalis 3.3 



Included in these 300 examinations were seventeen specimens from 

 native Filipinos who were admitted to the hospital fo,^ various ailments, 

 but only two were admitted for dysentery. The percentages of these 

 cases are as follows : 



Motile amoeba 5 76.0 



Ova of Ascaris lumbricoides 53.0 



Ova of Trichoeephalus dispar 76.3 



Ova of Agohylostoma duodenalis • 29.4 



Subtracting these 47 cases from 300 and arranging the percentage for 

 white enlisted men and officers of the Navy, the result is as follows : 



Motile amoeba? 32.15 

 Ova of Ascaris lumbricoides 7.4 



Ova of Trichoeephalus dispar 2.5 



Ova of Agohylostoma duodenalis 1.5 



