452 Proceedings of the Royal Physical Society. 
enteric fever, Still, | met with the disease at Bohr on the 
White Nile, at Foweira, at Magungo, just to the north of the 
Albert Nyanza, and I witnessed one epidemic in Uganda. IT 
say epidemic, because it was curious to notice that, generally 
speaking, enteric fever seemed to stop short directly an area 
was reached in which the banana forms the staple food of 
the population. It was far more frequently met with in 
those districts where the people lived chiefly upon grain, 
[ was surprised in my journey in Central Africa to notice 
the distribution of phthisis, for, although bronchitis, pleurisy, 
and pneumonia were constantly seen in nearly all the dis- 
tricts through which I passed, the cases of phthisis which I 
was able to observe were few and far between, and corre- 
sponded in a marked manner with the absence of malaria, at 
any rate in its most intense forms. From Khartoum along 
the valley of the Nile as far as the Albert Lake, through the 
swampy districts of Unyoro and Uganda, I can recall having 
seen very few cases of phthisis (in Uganda some eighteen 
or twenty). Subsequently, however, I saw a considerable 
number of cases in the Shuli district, at an altitude of 3000 
to 4000 feet, where malaria is very rare. Again, in travel- 
ling through the Bahr-el-Ghazel district I saw a considerable 
number of phthisical individuals, not inhabitants of that 
province, but men or women, soldiers or slaves, who had 
come from the elevated districts in the Monbuttu country, 
Farther north, at Dara, | again met with phthisis in people 
who inhabited the highlands of the Djebel Marra district, 
where I was informed that malarial fevers were entirely 
absent. 
With regard to the other diseases of Equatorial Africa, 
what follows refers to the districts mentioned above, and 
with which I am personally acquainted; but from what I 
have read on the subject, I have reason to believe that the 
same diseases obtain to the south. : 
Small-pox occurs in epidemics, and is very fatal. Measles 
and scarlet fever are unknown, Iheumatism is common 
everywhere, and cholera has on various occasions passed 
through the country in the form of epidemics. With regard 
to phthisis, it is very rarely met with throughout the whole 
