124 
The condition has been described as occurring mainly in 
India, Africa, and tropical America. 
For the most part the descriptions both of the paiba 
and the associated larvae have been neither very accura 
nor full. p. 
Railliet in his report deals extensively with the Yu. 
of Descazeaux, who studied the condition in Brazil. fcis 
cazeaux conducted some careful observations, and his Ws es 
tion has considerably advanced our knowledge of the a deb X 
The following is a brief summary of the descripti 
given by Descazeaux : — 
g mm 13 
h ` 
$ 5 5 : ri 
heal. If the sore is only in the first stage it will disappea 
from four to six da 
X pea | By. ughly 
Microscopical.—The tumour in the first stage divi ROME 
cocytes : 
superior layer formed chiefly of thickened fibrous tissue. ue dr 
middle, parasitic case area .. These, p gi by 
found, measuring from 800 » to 900 mu in le 
.300 x to 400 u in’ breadth. ; d vary from 
. The worms are found in these necrotic areas, an ty which 
. two to five in number. (me areas prese ft T 
. stagb marily occupied by the parasite. In tumours of th 
Stage it is difficult to find typical parasitic nec the 
. ‘umours consist mainly of dense fibrous tissue. Som 
débris of a parasite is seen. : is 
= _,. Descazeaux also gives a description of the Pri a 
Which as Railliet has shown, he wrongly consider inde 
mature female. This parasite he calls the “constant parasite — 
