CHAPTER X 

 KALA-AZAR AND ORIENTAL SORE 



AMONG the most serious drawbacks to the 

 colonization or profitable working of East and 

 Central Africa, the occurrence of the tsetse flies, 

 fatal to both men and cattle, have been considered. 

 Egypt in the north, and the Cape in the south of 

 Africa, while free from tsetse flies affecting man, are 

 threatened with a danger from diseases, imported 

 especially from India and the East, that are fatal to 

 native and European alike. Many thousands of 

 natives from Southern India go to South Africa each 

 year for work, and among them, despite all the care 

 taken by the medical immigration officers, cases of 

 blood and skin diseases break out and also spread. 

 The danger is not only felt with regard to Africa, but 

 is also an impediment to progress in India. Three 

 of these diseases may now be considered in turn. 

 The first is known as Kala-azar, or the " black 

 malady," and occurs more especially in India and 

 China. Another, but far less fatal malady, is known 

 variously as Delhi Boil, Aleppo Button, Bouton 

 d'Orient, Tropical Sore, and Oriental Sore, as well 

 as by other local names. The names are not signifi- 



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