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destroyed in the course of its four weeks rise, and the remaining 8 in the course of
its five weeks fall. Altogether, in the course of these 9 weeks, we recorded 117 seizures
of a choleraic character, of which 46, or 39 per cent., were cases of completely
developed cholera.
The remaining case, which happened on November 27th—three weeks, at least
after the epidemic had died out—was a stray one, due to a special cause.
Here, then, we recognise two waves of epidemic influence, the first bringing under
its operation nearly twice the number of persons as the second wave, and in a shorter
space of time producing a much larger number of fully-developed and fatal cases,
and a larger proportion of less severe cases designated "choleraic diarrhoea."
Out of 63 cases of cholera, 40, or 63.4 per cent. died.
„ 160 „ choleraic diarrhoea, 6, or 3.7 per cent. died.
„ 223 „ choleraic seizure, 46, or 20.6 per cent. died.
The second wave brought under its operation about half as many persons during
a longer period of time, produced fewer fully-developed and fatal cases, and a smaller
proportion of less severe cases. That is to say, the cases of choleraic attack observed
were, although fewer in number, on the whole more severe in character.
Out of 46 cases of cholera, 25, or 54.3 per cent. died.
„ 71 „ choleraic diarrhoea, 3, or 4.2 per cent. died.
„ 117 „ choleraic seizure, 28, or 23.9 por cent. died.
In further comparing the operation of the two waves, we must say, then, that in
the first the influence affected more people, but was, on the whole, rather less severe
in the intensity of its operation, where it fell, than the second wave; and that the
second wave affected fewer people; but that where it fell its intensity of operation
was somewhat greater than the first wave of epidemic influence. It was checked,
somehow, in its extension; but its force, where it was free to operate, was more
violent.
Localities affected.
Looking at a map of the parish, on which has been marked in spots the cases of
cholera that occurred, it appears that there were three principal foci towards which
the epidemic influence appeared to gravitate. The principal of these was situated at
the southern extremity of the parish; the second constituted by Lower Holloway,
the Queen's Road, and Palmer Place sanitary districts; and the third was the
immediate neighbourhood of the Back Road, KingsJand.
1st focus.—This includes streets and places in the following sanitary districts :—
" Lower Road," " St. Peter's," " City Road," " Irish Courts," " Theberton,"
'' Trinity," and " White Conduit" districts. In this focus there occurred altogether 53
out of the 110 cases of fully-developed cholera that were observed in the parish; that
is, about half the cases. It was in this focus that the disease first broke out: it was