INTRODUCTION 9 



charge, and our thanks are due to him for the trouble he took with 

 our cases. As will be explained below, they were controlled very 

 carefully, at least one entire stool from each being inspected daily. 

 We obtained detailed histories from all the cases, especially as 

 regards the possibility of past dysentery or emetin treatment, and 

 the occurrence of any symptoms during the observation was 

 carefully noted. In the laboratory work connected with these 

 hospital cases, which involved blood examinations, bacteriological 

 culture work, collection of material and obtaining informa- 

 tion from the patients, we have been very much helped by 

 Cpl. W. J. Muggleton, E.A.M.C., who was senior laboratory 

 assistant at the Wellcome Bureau of Scientific Kesearch before 

 he left for active service abroad, in connection with our work. 



When the hospital cases had completed their course of treat- 

 ment it was necessary to keep them under observation for some 

 time. An arrangement was made whereby a section of the 

 convalescent depot at Mustapha was set apart for their reception. 

 From these cases Serjt. Weavis collected specimens on alternate 

 days for at least one month, so that we were able to note at once 

 when any relapse of the infection occurred. Major Fisher, R.A.M.C., 

 Officer Commanding the Convalescent Depot at Mustapha, made all 

 arrangements for the reception of our cases, and we are greatly 

 indebted to him for the trouble he took and the care with which 

 our wishes were carried out. 



We wish also to express our indebtedness to Colonel Beach, 

 C.M.G., A.D.M.S., at Alexandria, for the interest he took in our 

 inquiry and for the help and assistance he constantly gave, 

 especially in smoothing our path in the carrying out of what were 

 sometimes rather difficult and intricate negotiations. Finally, we 

 wish to acknowledge the help we received from Colonel Sandwith, 

 C.M.G., whose wide Egyptian experience and the position he held 

 as Consultant Physician to the Military Hospitals in Alexandria, 

 rendered his assistance and encouragement most valuable. 



