48 
pin worms (1 infection). These infections were distributed among the 
different groups as follows : 
Examined. 
Infections. 
Per 100 
persons. 
Tn cJiuris trichiura : 
Connecticut 
108 
6 
0 . oo 
District of Columbia — 
Whites 
148 
7 
4.73 
Negroes 
108 
12 
11.11 
Ascaris lumbricoides: 
Connecticut 
108 
3 
2.77 
District of Columbia — 
Whites 
148 
0 
0.00 
Negroes 
108 
1 
0.93 
Hookworms: 
Connecticut 
108 
0 
0.00 
District of Columbia — 
Whites 
148 
1 
0.68 
Negroes 
108 
0 
0.00 
Oxyuris rermicularis: 
Connecticut 
108 
1 
0.93 
District of Columbia — 
Whites 
148 
0 
0.00 
Negroes 
108 
0 
0.00 
The rates of infection with whipworms are seen to vary in the dif- 
ferent groups in the same manner as did the rates of total infection. 
Eelworms were more prevalent among the patients admitted from 
Connecticut than among the negroes from the District of Columbia. 
The patients admitted from the District of Columbia were practi- 
cally residents only of the city of Washington, while the Connecticut 
patients were received from both rural districts and cities, and in this 
fact probably lies the explanation of the higher rate of infection 
found among the Connecticut cases, rural life being naturally more 
favorable to the prevalence of intestinal worms than is city life. 
Rural and city life . — Some confirmation of the above explanation 
of the greater prevalence of intestinal worms among the Connecticut 
than among the District of Columbia patients is found when we 
separate from the 108 Connecticut cases those admitted from the 
larger cities of the State. As the hospital records give simply the 
town from which the patients were received, and as the Xew England 
towns commonly include both rural and urban population, it is 
impossible to draw a well-defined line between the Connecticut 
patients admitted from country and from city life. By separating 
those admitted from the cities of Hartford, Bridgeport, and Xew 
Haven, however, cities which are coextensive with the towns of the 
same name, we are able to obtain a small group of patients with an 
assured historv of citv life. Twentv-six, or about one-fourth of the 
108 Connecticut patients under consideration, fall within this group. 
