The Sfikoch-ete of Egyptian Kelapsing Fever 

 Is IT A Specific Extity? 



BY 



The Directoe 



Captain Bousfield has asked me to add some notes on the experimental work 

 carried out in connection with the cases of Egyptian spirochaitosis he has recorded. 

 I do so with pleasure, but fear they are far from complete. At the time, I was working 

 practically single-handed in the laboratory, being busy with administrative routine and 

 research work, and in addition had my usual duties as Medical Officer of Health for 

 Khartoum to perform. Hence it was impossible to carry out research work on this 

 spirocha;tal fever in any great detail. The unfortunate loss of the strain, combined 

 with the recovery of all the patients, brought the work to an untimely end, but it has 

 been possible to come to certain fairly definite conclusions which are here stated. 



-', — T'' sho\r inoi7"'holoi;ii 



In the first place a word as to the morphology of the spirochsetes concerned. One 

 would like to have studied these by the dark-field illumination method, but at that time 

 I did not possess the necessary apparatus. I only examined stained preparations of human 

 blood, though I observed the parasites in fresh films from the blood of successfullv 

 inoculated animals, monkeys and gerbils. 



Morpliology 



