37 
The number of cases for Bridger and vicinity is not sufficient!}^ large 
to permit of comparison by age, but it may be noted that 12 were in 
males and 5 in females. 
Age, years. 
Males. 
Com- 
piled by 
Wilson 
and 
Chown- 
ing, 
1904a, p. 
36. 
Addi- 
tional. 
Females. 
Total. 
Com- 
piled by 
Wilson 
and 
Chown- 
ing. 
Addi- 
tional. 
1904a, p. 
36. 
Deaths. 
Both sexes. 
Total. 
Total. 
Deaths. 
Deaths. 
Inclusive under 5. . . 
■6 to 10 
11 to 20 
21 to 30 
31 to 40 
41 to 50 
51 to 60 
61 to 80 
Not stated 
Total 
59 
87 66 
50.0 
71.4 
70.0 
78.9 
80.0 
75.0 
66.6 
100.0 
100.0 
75.9 j 47 j 28 
bl 
4 52 
100.0 
57.1 
45.4 
60.0 
63.6 
50.0 
50.0 
100.0 
0 
71.4 
64.2 
57.1 
72.4 
75.0 
70.0 
60.0 
100.0 
66.6 
32 61. 5 
139 
70.5 
a Baskerville, 1903. Merrick’s case, 1903. 
This table, October 31, includes 11 additional cases for Bitter Root Valley, 1904. 
So far as can be judged from these statistics, the lethality of this 
disease for the Bitter Root Valley has been as follows: 
Average of all cases, 70.5 per cent. 
Average of all males, 75.9 per cent. 
Average of all females, 61.5 per cent. 
For females from 11 to 20 years, 45.4 per cent. 
For males under 5 years, females 41 to 50 years, and 51 to 60 j^ears, 50 per cent. 
For females from 6 to 10 years, and all cases from 11 to 20 years, 57.1 per cent. 
For females from 21 to 30 years, and all cases 51 to 60 years, 60 per cent. 
For females from 31 to 40 years, 63.6 per cent. 
For all cases from 6 to 10 years, 64.2 per cent. 
For males from 51 to 60 years, 66.6 per cent. 
For males from 11 to 20 years, and all cases from 41 to 50 years, 70 per cent. 
For all cases from 21 to 30 years, 72.4 per cent. 
For males from 41 to 50 years, and all cases 31 to 40 years, 75 per cent. 
For all males, average, 75.7 per cent. 
For males from 21 to 30 years, 78.9 per cent. 
For males from 31 to 40 years, 80 per cent. 
For males from 61 to 80 years, females 61 to 80 years, all cases 61 to 80 years, and 
females under 5 years, 100 per cent. 
Comparison. — In Texas fever, the disease attacks both sexes, but seems to be 
more seldom in calves than in adults; Starcovici says that cows are rarely attacked 
with hemoglobinuria, and that the disease is unknown in calves; also that only 
adult sheep are affected with carceag. According to Robertson (1901, p. 327), 
canine piroplasmosis attacks both young and old dogs; Nocard and Motas (1902, 
p. 275) found young dogs to be much more susceptible than adults. 
