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TYPHOID FEVER. 15
Again, if the cause of the unusual prevalence was water,
some indication would be obtained by comparing the number
of attacks per thousand of the population in different
districts ; for it is pretty certain, with a contaminated water
supply, that districts supplied from different sources would
show great inequality of attack. Accordingly the writer
has multiplied the number of notifications contained in the
Asylums Board returns by a thousand and divided these
numbers by the 1891 populations, and thus obtained relative
rates as follows :—
Rate of incidence
of typhoid per
thousand of population.
Fulham 0.47
Whitechapel 0.54
Camberwell 0.54
Kensington 0.56
Paddington 0.61
Bermondsey 0.64
Lewisham 0.65
Shoreditch 0. 68
Hampstead 0.70
Limehouse 0.80
Marylebone 0.80
Islington 0.84
Newington 0.85
Wandsworth 0.85
Holborn 0.89
St. Giles 0.90
Hackney 0.92
St. Pancras 0. 92
St. George's, Hanover Square 0.93
Clerkenwell 096
Lambeth 0.96
Chelsea 0.99
Battersea 0.99
Greenwich 101
Bethnal Green 1.16
Poplar 1.33
St. George's in the East 1.33
Water Supply.
West Middlesex, and Chelsea
New River, and East London.
Kent, Southwark and Vauxhall.
West Middlesex, Grand Junction,
and Chelsea.
West Middlesex, and Grand Junction.
Southwark, and Vauxhall and Lambeth.
Kent (in part).
East London (in part).
New River, and West Middlesex.
East London.
(Excluding imported cases). West
Middlesex mainly, Grand Junction
(in part).
New River.
Lambeth, Southwark and Vauxhall.
Lambeth.
New River.
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East London.
New River.
Grand Junction, and Chelsea.
New River.
Southwark and Vauxhall.
West Middlesex, and Chelsea.
Southwark, and Vauxhall and Lambeth.
Kent.
East London.
A close examination of the list shows too many
anomalies to suggest that even one of the Companies was
supplying grossly polluted water.
There are now a number of cases on record which
would seem to prove that Oysters put down to fatten in the
mouths of sewage-polluted rivers cause from time to time