31 



[Althougli the incidence of E. histolytica infection in the adults 

 and in the children was not very different, when the small numbers 

 examined are taken into account, there was a notable difference in 

 the two groups with regard to the other protozoa. This will be 

 evident from the following table.] 



Adults. Children^ 



Total No. examined 178 49 



Percent, infected with : 



E. histolytica 3..S 2.0 



E. coli .... 



E, nana 



G. intestinalis 



Ch. mesnili . 



[The Stapleton Workhouse series included a number of mental 

 cases (68 in all). The figures obtained for all of the inmates of 

 this institution (213) were : 



Mental. Non-mental. 



Percent, infected with E. histolytica . 2.94 2-75 



It is thus evident that the ' mental ' and ' non-mental ' cases 

 were not appreciably different, so far as their degree of infection 

 with E. histolytica was concerned.] 



[The following are particulars — compiled from the cards — of 

 the 7 persons who had never been abroad and in whose stools 

 cysts of E. histolytica were found.] 



[Case No. 32 had recently had an attack of typhoid, whilst 

 No. 78 is stated to have suffered from dysentery 6 years before. 

 The remainder gave no history of dysentery, diarrhoea, or other 

 intestinal ailment.] 



In all these cases E. histolytica was found in the encysted 

 condition in the stools. The cysts were all of races ranging from 

 11-5 IX to 12-8 jj. in average diameter. None of the races of 

 E. histolytica with smaller cysts were met with. 



Out of the whole series of cases (213 adults, 49 children), 

 22 (all adults) had a previous history of dysentery. Only one of 

 these was found infected with E. histolytica. But 50 adults and 

 16 children had suffered at some time from chronic diarrhoea, 

 and in none of these were the cysts of the parasite detected. 



4. Leeds and Sheffield Reports. 

 By Muriel M. Nutt. 



The following are the results obtained from the examination 

 of the stools of civilians with a view to ascertaining what 

 percentage of the normal population of this country is infected 



A 10 



