C. M. Wenyon 
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apparatus and outfit, and a large part of my collection of flies. No 
sooner was work resumed after the delay caused by this accident, than 
an epidemic of cholera completely disorganised my plans and put a stop 
to certain experiments I was about to conduct with the sand fly, 
Phlebotamus. Still, the results obtained as far as they go are of interest 
and will be found below in the following sections. 
I. Oriental Sore in Bagdad. 
Plate XIV. 
A. The disease as it occurs in man. 
As it occurs in Bagdad the disease is essentially one of childhood, 
and just as in England all children are expected to suffer from measles, 
so here the sore is looked upon as the natural portion of childhood. 
Being a disease which is accompanied by little or no constitutional 
disturbance, and in consequence by no death rate, it is not feared except 
for its inconvenience and the possibility of its leaving a disfiguring scar 
upon the face. The sore first makes its appearance as a rule, between 
the ages of one and three, and the face of the little child with one or 
more sores varying in size from a sixpenny piece to half a crown, over 
which are constantly feeding swarms of flies, is one of the commonest 
pictures of the Bagdad streets. Younger children may contract the 
disease, and I have seen the sore on the cheek of a baby seven months 
old,—but apparently there is little chance of the child becoming infected 
till it begins to run about and assert its independence in refusing to be 
completely covered up as is the manner of dealing with very young 
children in these countries. It occasionally happens that a child 
escapes infection and does not get the sore till later in life. Such cases 
are exceedingly rare, even if the evidence on which they are based is 
reliable. I have seen natives of Bagdad who have lived there all their 
lives, who declare that they never have suffered from the Bagdad sore. 
However, as the sore may be nothing more than a small papule of not 
greater diameter than five millimetres, and as it may never exceed this 
measurement, its presence could easily have been ignored. Though it 
is possible that a native of Bagdad may completely escape infection, it 
still remains a fact that the vast majority of the population contract the 
disease when young, and between the ages of one and three. 
One constantly encounters 9 ases of the sore in adults, but, with the 
very few possible exceptions just mentioned, these are in people who 
