I 
1 
PART ir. 
STATISTICAL STUDIES ON THE SEASONAL TREVALENCE OF TYl'HOTD 
FEVER IN VARIOUS COUNTRIES AND ITS RELATION 
TO SEASONAL TEMPERATURE. 
i 
i 
i 
I 
I. A REVIEW OF THE LITERATUEE OX THE SEAROXAL niEVALKNC^K 
OF TYPHOID FEVER. 
TnE variations 
one of the charact 
observers. Elisha 
the prevalence of typhoid fever with the changing 
of 
emarkable disease which strnck the ven 
B 
1842 
wrote of 
foil 
not 
!«' 
ff]cf1 
typhoid fever occurs, with any degree of uniformity, more frt;(|iH'nilj 
year than in another. 
P 
g 
. . I am sure, however, that, 
In the autumn. In New Engl 
g 
ijt'f 
season of the 
ride, its annual 
unfrequently called the autumnal or fall fever." 
Dr. Flint, in 1855,^^^^ pointed out as one of the points of distinction between 
typhus aud typhoid fever that while the former is unaffected by season, (be latter 
fe 
icted 
predil 
for the autumnal months, althou 
o 
no UK'.'UH 
occurrence to the latter." G 
n 
o 
ddle Europe and North America the majority of cases as well as the ep 
breaks 
the 
sp 
o 
of Octo 
18G0. D 
irred most abundantly in autumn, and that the winter typl 
intensity, followed by that of summer, while the fewest ca 
He quoted Lombard as authority for the fact that in Gcr 
shows seven 
Pweedle^^) published a table of 
mes 
many typhoid cases as the month of Mar 
the admissions of tlie difftrent f 
I 
ued fever into the London Fever Hospital for ten years and bro 
interestln 
o contrast 
(r 
typhoid were as foil 
between typhoid 
d typhus fevers. His monthly fig 
f 
ows : 
1 
J 
113 
F 
85 
# 
J 
157 
i 
A 
233 
8 
2C0 

1 
253 
223 
■ 
u 
77 
r 
1 
A 
1 
M 
79 
1 
J 
1 
1 
jr,i 
GO 
119 
i 
V. 
