10 
CHBOUGB [NSECTS THAT CABBY DISEASE. 
by States is available only for the following registration States: 
California. Colorado. Connecticut, District of Columbia, Indiana. 
Maine, .Maryland. Massachusetts, Michigan, New Hampshire, New 
Jersey, New York, Pennsylvania, Rhode Island. South Dakota, and 
Vermont, all of which arc Northern State-. For these State- the 
census report- from L900 to L907, inclusive, give the following death 
rates : 
Tabu I. -Deaths dm to malaria in the registration States, 1900-1907. 
Year. 
Number 
of deaths 
from ma- 
laria per 
100.000 
popula- 
tion. 
Total 
deaths 
from ma- 
laria. 
Year. 
Number 
of deaths 
from ma- 
laria per 
100,000 
popula- 
tion. 
Total 
deaths 
from ma- 
laria. 
1900 
7.9 
6.3 
5.4 
4.3 
4.2 
2, 434 
1,791 
1,738 
1,410 
1,391 
1905 
3.9 
] 3>1 
1901 
3.5 
1902 

1 1907 
l Ififi 
1903 
1904 
Estimating, from the preceding table, the average annual death 
rate due to malaria at 4.8 per 100,000 population, and considering 
that the registration area includes only 1G of the Northern States 
I assuming fairly, however, that the death rate in the other Northern 
States is the same) , it seems reasonably safe to conclude that the death 
rate from malaria for the whole United States must surely amount 
to 15 per 100,000. It is probably greater than this, since the statistics 
from the South are city statistic-, and malaria i- really a country 
disease. Thus it is undoubtedly safe to a— nine that the death rate 
for the whole population of the United States is in the neighborhood 
of 15 per 100,000. This would give an annual death rate from 
malaria of nearly 12,000 and a total number of deaths for the 8-year 
period 1900-1907 of approximately 96,000. 
But with malaria perhaps a- with no other disease doe- the death 
rate fail to indicate the real los> from the economic point of view. A 
man may suffer from malaria throughout the greater part of hi- life, 
and his productive capacity may be reduced from 50 to 75 per cent, 
and yet ultimately he may die from some entirely different immediate 
cause. In fact, the predisposition to death from other causes brought 
about by malaria is so marked that if. in the collection of vital statis- 
tics, it were possible to ascribe the real influence upon mortality that 
malaria possesses, ihi- disease would have a very high rank in mor- 
tality tables. Writing of tropical countries, Sir Patrick .Man-on 
declare- that malaria causes more deaths, and more predisposition to 
death by inducing cachectic states predisposing to other affections, 
than all the other parasites affecting mankind together. Moreover, 
it has been shown that the average life of the worker in malarious 
