19, 8 Maxwell: Filariasis in China 259 
the north. Taking a large hospital about the middle of the coast 
belt, I found a percentage of 2.4 of filarial cases, who came to 
the hospital for some disease connected with this infection 
(Changpu, Fukien) ; but this does not represent the incidence 
of filarial infection in this region. My figures give a percentage 
of 24.8 of the general population infected with the parasite, 
and the work of my successor at that hospital, Dr. J. H. Mont- 
gomery, shows a slightly higher figure. 
Besides these figures, 3.39 per cent of the general population 
showed no embryos in the blood, but presented signs of old 
filarial disease, while 16.1 per cent of another series were found, 
on microscopical examination, to be infected but presented no 
signs and had no history that could be attributed to the presence 
of filaria. 
With regard to the age incidence, taking a series of 67 cases 
affected with filarial disease, we have the following findings: 
TABLE 1.—Showing age at which disease commenced in sixty-eight cases. 
Ages in years. Cases. 
1 to 10 J 
10 to 20 6 
20 to 30 22 
30 to 40 25 
40 to 50 10 
50 to 60 3 
Above 60 1 
TABLE 2.—Showing duration of disease before patient’s first visit to 
hospital. 
Years. Cases. 
1 7 
1 to 5 28 
6 to 10 17 
11 to 15 ! 9 
15 to 20 6 
According to the nature of their disease, a series of two hun- 
dred sixty hospital patients can be classified as follows: 
TABLE 3.—Two hundred sixty patients, classified according to disease. 
Cases. 
Elephantiasis of scrotum 48 
Lymph scrotum 44 
Elephantiasis of right leg i 
Elephantiasis of left leg 
Elephantiasis of both legs 13 
Filarial abscess — 33 
Filarial gangrene of scrotum 8 
Lymphatic fistula 6 
Chyluria on 
Other filarial diseases 
