PART I. INCIDENCE 23 



dysentery. This was quite in agreement with the experience of 

 other hospitals in Egypt during the period covered by this report. 

 Bacillary dysentery was everywhere much more common than 

 amoebic dysentery, which was a comparatively rare disease in spite 

 of the fact that such large numbers of carriers of E. histolytica 

 existed. 



(d) British Prisoners in the Military Prison, Gabarri. An 

 examination was made of 168 prisoners in the military prison. 

 The findings in this case are of interest, for it was noted that the 

 majority of the men were suffering from some intestinal disorder 

 the stools of as many as 138 of the 168 men being abnormal in one 

 way or another. A bacteriological examination made by Captain 

 Campbell, E.A.M.C., bacteriologist to the 19th General Hospital, 

 of the stools of ten cases taken at random yielded definite 

 dysentery bacilli (mannite fermenting) in three, and bacillus 

 Morgan No. 1 in four. The protozoological findings which are 

 shown below did not afford any explanation of the condition of 

 the men. Many of the men were passing dysenteric stools, others 

 had chronic diarrhoea, and others were passing abnormally loose 

 motions. 



The protozoa found are distributed very much as they are 

 amongst the cases examined in hospital (Column 5, Table IX, 

 page 26). The E. histolytica infections are lower, but the figure 

 1*8 should most certainly be increased at the expense of the 17'2 

 for the undiagnosed amoebaB. It is noteworthy that the flagellate 

 infections amongst these men are almost identical with those found 

 amongst the hospital patients. The E. nana infections were higher 

 than in any other group examined. The percentage of cases 

 infected with blastocystis is high (41*0), but it was only in this 

 group that a special note of the occurrence of this organism was 

 made. 



Though the men in Gabarri Prison were supposed to be healthy 

 men, the condition of their stools showed them to be otherwise, with 

 the result that they were more in line with the cases admitted to 

 hospital for dysentery, diarrhoea, or other intestinal trouble. 



Amongst these men again, as with the hospital cases, the general 

 looseness of the stools explains the higher percentage of flagellate 

 infections. 



It is, perhaps, worthy of note that a very large proportion of the 

 prisoners showed in the stool a large spore-bearing bacillus. This 

 was found in at least 30 per cent, of the cases examined, and was 

 frequently present in such numbers that the microscopic field was 



