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97
Diseases of the Brain and Nervous System caused, as
usual, by far the largest number of deaths registered,
amounting to 145, or upwards of 23 per cent. of the
whole; but more than 72 per cent of these deaths
occurred in the Surrey County Lunatic Asylum, and,
except from the circumstance of being registered in
Wandsworth, do not properly belong to this sub-district.
Excluding this class of diseases for the reasons already
given in reference to the determination of the death-rate,
the following are the numerical proportions borne by the
several classes of disease in the causation of mortality.
Diseases of the Organs of Respiration contributed the
largest number, amounting to 16 per cent. of the whole;
diseases of the Zymotic class formed the next largest
number of 15 per cent.; following in numerical order of
fatality, the Tubercular class of diseases (three-fourths
of which where due to Consumption) formed 14 per cent.;
other Constitutional diseases of this class (which in former
reports were grouped under the head of Cancer, Dropsy,
and of uncertain seat), 4.4 per cent.; diseases of the
Organs of Circulation (Heart, &c.), 5.7 per cent.;
Premature birth, &c., 5.4 per cent.; Old age, 5.4 per
cent.; diseases of the Digestive Organs, 3.5 per cent.;
Violence, 2.4 percent.; Urinary diseases, 1.9 percent.
The most fatal single disease was, as usual, Consumption,
which formed 10.6 per cent., and was closely approached
by Bronchitis. The greater or less fatality that resulted
from the several classes of diseases during the past year
in comparison with that of the preceding ten years and
their averages, is shewn in the two following tables, the
first of which compares the Non-zymotic and the second
the Zymotic Diseases. Although the essential fluctuations
both in number and kind, will be found to be presented,
as is invariably the case, by diseases of the Zymotic class,
a greater variation than usual is observable in the table