273 
ORIENTAL SORE IN BAGDAD, TOGETHER WITH 
OBSERVATIONS ON A GREGARINE IN 8TEG0MYIA 
FASGIATA, THE HAEMOGREGARINE OF DOGS AND 
THE FLAGELLATES OF HOUSE FLIES. 
By C. M. WENYON, M.B., B.S., B.Sc., 
Frotozoologist to the London School of Tropical Medicine. 
{The Rejoort of the Expedition sent to Mesopotamia in 1910 
by the London School of Tropical Medicine.) 
With Plates XII—XVI and 36 Text-figures. 
CONTENTS. 
PAGE 
Introduction.274 
I. Oriental sore in Bagdad . . . . . . . 275 
A. The disease as it occurs in man.275 
Seasonal prevalence of the disease .... 276 
Position of the sore on the body .... 277 
Number of sores on each individual .... 278 
Incubation period ........ 278 
Character and development of the Bagdad sore . . 280 
Duration of the disease.281 
Immunity ......... 281 
Symptoms ......... 282 
Treatment ......... 283 
Prevention ......... 284 
B. Examination of the lower animals for signs of the 
disease and inoculation of these from man. Experi¬ 
ments with dogs, cats, rats, rabbits, birds, ticks . 287 
C. Examination and dissection of flies and ticks . . 290 
D. Experiments undertaken with the object of infecting 
flies with the parasite of the sore . . . 296 
E. Character of the parasite as found in the sore . . 304 
F. Culture of the parasite.307 
G. Character of the developmental forms of the sore para¬ 
site in blood agar culture.308 
18—2 
