! 
SEDGWICK AND WINS! 
BACILLUS OF TYJ'llOID FEYKK. 
!5 
Tlie first systematic attempt to show a relation 
nite meteorological 
dition 
was 
ade 
tallied that the seasonal curve of typhoid 
11 
O'P^ 
ov(T rmd drii 
I 
r in ISGO.'-'^ 
•ndcd to that 
1 
I" iii.ijii- 
tliat the 
greatest 
the alleged fact 
prevalence was at periods of 
pri"-»'ntT. nn(l 
the isotherm of 22° C. Hall 
typhoid fever docs not occur auloclitlioiKHi^ly 80uth of 
results, however, were not confi 
observers : and 
new theory 
to 
complete possession of the field 
kofer and the Munich school. 
('f1 by 
y of typhoid fuver soon took u 
This was the famous ground-wafer theory of P 
As applied to typhoid fever thi« thcorv 
th 
by Ludwig Buhl in the first article of the first number of the " ZciUMft far Blohn/ie:' <»' 
The author dealt with eight hundred and ninety-nine typhoid deaths in a Munich 
hospital during the period 1855-64, and compared, by the graphic met1i<Ml, (he 
monthly and yearly variations with the changes in temperature, prccipifnl ion, and 
o 
und 
level. 
Th 
showed a maximum between D 
March, 
culminating in 
February, and a minimum in August 
and October. Tli«^>e 
monthly variations, and tl 
le fluctuations from year to year, did not corn'-pond to tin- 
temperature or the precipitation, but did show a certain inverse relation to the litiL-bt 
of the ground water. 
Seidel ^^'^ analyzed the fig 
g 
by Buhl 
He 
compared for each of the one hundred and eight months, from 1S5C to 1^'M, the 
typhoid cases 
the value for 
whole period. 
nd the ground-water level, using in each case the diffe 
dividual 
th and the average value for 
I 
during 
In 
3.5 cases an excess of typhoid fever corresponded ullh an 
excessive fall of the ground water, and in 34 
the reverse relation obt 
Seidel 
I ted 
probability of this preponderance being d 
rty-six thousand. His monthly averages for morbidity are as foil 
Typhoid Cases. Mlxich Hospital. Average, 1856-64. 
In th 
e 
precip 
diffe 
year, SeideP^Unalyzed Buhl's figures in relation 
aij-ain 
ding any differen 
of 
per se, by 
to the monthlv- 
tl 
H 
fences between the value for a month and the average value f 
le 
th 
