32 



with Entamoeba histolytica and othei' intestiaal protozoa. The 

 majority of the examinations were done at Leeds on specimens 

 obtained from patients at the G-eneral Infirmary and "Workhouse 

 Infirmary. A number of specimens have also been obtained from 

 the Royal Hospital, Sheffield. 



AcJcnowledgements. — I am extremely indebted to Professor 

 M. J. Stewart for the trouble he took in getting me specimens 

 from the Leeds General Infirmary, and for his kindness and the 

 interest he took in this work. I also wish to thank Dr. Allen 

 of the Leeds Workhouse Infirmary for allowing me to obtain 

 specimens from the workhouse patients, and Major Jamieson for 

 the facilities he gave in starting the work at the East Leeds "War 

 Hospital. To Dr. Gruner I am indebted for the specimens from 

 the non-dysenteric military patients at Killiugbeck and East 

 Leeds "War Hospitals (see Appendix, p. 36). At Sheffield my 

 work at the University has been greatly facilitated by Professor 

 Sholto Douglas's kindness and help. I must also express my 

 gratitude to Dr. Hall for his kind assistance in obtaining speci- 

 mens for me from the Eoyal Hospital, and to Dr. Naish for those 

 obtained from the Children's "Ward of the same Hospital. 



Technique. — The technique employed has been exactly similar 

 to that used in the routine examination of the military cases. Two 

 preparations were made from every specimen, from different parts 

 of the stool, the preparations being made in normal saline or 

 "Weigert's iodine solution. 



(a) Leeds. 



Two classes of civilians have been examined — adults, and 

 children under twelve years old. The following table gives the 

 percentages of protozoa found in the total number of persons 

 examined : 



Total No. of persons examined 461 



Percent, infected with : Adults {S3S). Children (128) . 



Entamoeba histolytica 1.2 1.6 



21.0 13-3 



2.4 4-7 



0.3 0.0 



E. coli 



Endolimax nana 

 lodamoeba biitschlii 

 Giardia intestinalis 

 Chilomastix mesnili . 

 Trichomonas hominis 



3.6 



11.4 7.8 



0-3 0.0 



It was necessary to find out how many of ^he 461 civilians 

 examined had ever been abroad. In the next table, therefore, 

 these are divided into different groups, A, B, C. In Group A 

 none of the 210 adults had ever been out of this country, and of 

 these 3 were infected with B. histolytica. All the 128 children 

 examined were found to belong to Group A, and of these 2 were 

 passing M histolytica cysts. Group B consists of those persons of 

 whom it was impossible to ascertain with certainty whether they 

 had ever been abroad. As far as could be gathered from the 

 sisters in the wards and other indirect sources it seemed very 



