47 
patients admitted to the hospitals within one year prior to the time of 
their examination. Such a selection gave a total, for both hospitals, 
of 626 persons. Of these 626 persons of comparatively short institu- 
tional life, 108 had been admitted to the Connecticut hospital from 
the State of Connecticut, 256 had been admitted to the Government 
hospital from the District of Columbia, and the remainder (262) had 
been received at the Government hospital either from other institu- 
tions or more or less directly from the widely scattered localities 
attendant upon service in the Army or Navy. a About the only com- 
parison possible to be made from our results, therefore, between differ- 
ent localities is one between Connecticut and the District of Columbia. 
The rates of total infection among our patients who were residents 
either of Connecticut or of the District of Columbia were as follows, 
each group being restricted to patients who had been in the hospitals 
less than one year : 
Examined. 
Infections. 
Per 100 
persons. 
Connecticut 
108 
10 
9.26 
District of Columbia 
256 
21 
8.20 
Although the District of Columbia patients included both whites 
and negroes, they are seen to have presented a rate of total infection 
lower by about 1 infection per 100 persons than the rate found among 
the Connecticut patients, all of whom were whites. If, in order to 
draw a comparison between the white residents of the two localities 
in question, we eliminate the negroes from the District of Columbia 
patients, the following results are obtained: 
Examined. 
Infections. 
Per 100 
persons. 
Whites 
148 
8 
5.41 
Negroes 
108 
13 
12.04 
From these figures it would appear that while negroes from the 
District of Columbia presented a rate of infection considerably in 
excess of that found among patients admitted from Connecticut 
(whites), the latter gave nearly twice as many infections per 100 
persons as did the white patients admitted from the District of 
Columbia. 
Only 4 species of parasites were represented by infections in the 
different groups of patients above considered, namely, whipworms (25 
infections), eelworms (4 infections), hookworms (1 infection), and 
a The soldiers who had served in the Philippines are considered under the head of military 
service rather than in this connection. 
