50 
The total infections among white males admitted to the Govern- 
ment hospital from military service, from soldiers' homes, and from 
civil life in the District of Columbia were as follows : a 
Examined. 
Infections. 
Per 100 
persons. 
Soldiers' Homes 
395 
15 
3. SO 
District of Colombia 
397 
22 
5.54 
Army before 1S9S . 
179 
13 
7.26 
Naw 
103 
9 
8.74 
Arm— ATTPT 
90 
19 
21.11 
PhilrnpV.e service - 
115 
52 
45.22 
The relative frequency of helminthiasis in the different groups, as 
set forth in the above figures, is confirmatory of what would be natu- 
rally expected from the various histories of the patients in question. 
In these histories locality and manner of fife are probably the most 
important elements from a parasitological viewpoint, though age and 
length of institutional life also are contributing factors. Before 
attempting to discuss the possible relative importance of these sepa- 
rate influences present in the histories of the patients it is desirable to 
consider the relative frequency of infection with each species of para- 
site in the above groups : 
T ri cr, u rs -• : - id i iura : 
Soldiers' Homes 
District of Colombia 
Army before iw&S 
Xavy 
Arm y after 1898 
Philippine service . . . 
Oxyuris rerrr, icu^ar:-*: 
Sc I tiers H ernes 
District of Colombia 
Army before 1S9S 
Navy 
Army after 18S5 
Philippine service 
Hookmoons: 
Soldiers' Hemes 
District of Columbia 
iv before 159S 
Lrmy after 1898 
Philippine service 
iv.;-;.; ' ' ' : - 
Sol 'tiers ' H ome s 
District of Colombia 
ved. 
Infections. 
Per 100 
persons. 
395 
6 
1.52 
397 
15 
3.78 
179 
8 
4.47 
103 
i 
6. SO 
90 
14 
15.55 
115 
36 
31.30 
395 
5 
1.27 
397 
3 
0.76 
179 
4 
2.23 
103 
1 
0.97 
90 
1 
1.11 
115 
0 
0.00 
395 
2 
0.51 
397 
2 
0.50 
179 
0 
0.00 
103 
1 
0.97 
90 
3 
3.33 
115 
14 
12.17 
395 
1 
0.25 
397 
o 
0.00 
c There mere 215 white males at the Government hospital mho could not be classinei in the above 
groups. 
