25 



sanatorium. Samples were sent in from 101 persons who had 

 never been abroad, and of these, 70 were residents of Birmingham, 

 and the remaining 31 were, for the most part, residents of places 

 in South Wales, Somerset, and Gloucester, and thus representative 

 of a more rural type of population than the 70 from Birmingham. 

 The examinations were made in the Research Laboratory in 

 Agricultural Zoology, Birmingham University. 



Altogether 72 males and 29 females were examined. Three 

 samples of faeces from each were examined in all except three 

 cases, two of which were examined twice and the other only 

 once. 



Practically all the individuals examined belonged to the 

 artisan classes. Entamoeba histolytica cysts were found in the 

 stools of six persons, only one of whom (Case 10) had experienced 

 any previous bowel trouble. 



The results in the case of the other intestinal protozoa are 

 set out in the following table, and call for no special remark 

 here: 



Total No. of cases examined 101 



Protozoa : No. of cases infected. 

 Entamoeba histolytica 6 



E, coli 

 Endolimax nana 

 lodamoeba biitscklii 

 Giardia ititestinalis 

 Chilomastix mesnili 



28 

 7 

 1 

 5 

 1 



[As the total number of cases examined in this series is 101, 

 it has not been thought necessary to present these results as 

 percentages.] 



I am indebted to Dr. Robertson, Medical Officer of Health 

 for the City of Birmingham, for very kindly granting me 

 facilities to obtain stool samples from Salterley Grange Sana- 

 torium. To Dr. E. G. Glover, M.O. in charge of this sanatorium, 

 my very best thanks are due for the great interest which he took 

 in the work both in the collection and dispatch of the samples 

 and in obtaining the previous medical histories of those cases 

 carrying E. histolytica. Through his keenness, too, he obtained 

 samples from patients at the Cranham Lodge Sanatorium, Stroud, 

 in the charge of Dr. Arthur H. Hoffman, to whom also my best 

 thanks are due for the interest taken in the work and for the 

 readiness with which he sent information about the carrier cases. 



[The following additional particulars concerning the six cases 

 infected with E. histolytica are given on the cards returned from 

 Birmingham, and are added here as they contain interesting 

 information.] 



Cases infected with E. histolytica. 



