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(e) Smallpox.
During the months of March and April information was received
about certain passengers and crew proceeding to this area
from ships reaching this Country from the East, and on which
one or two cases of Smallpox had occurred. These contacts were
visited, and kept under supervision, but no cases developed.
On several occasions, I was called upon for consultation by the
practitioners in the district to decide on the diagnosis of rashes
suggestive of Smallpox, but none of the cases proved to be Small
pox.
(f) Typhus Fever.
As in the case of Smallpox, information was received on one
occasion about certain members of the crew proceeding to this
area from a ship reaching this Country from the East, and on
which a case of Typhus had occurred. The contacts were visited,
and kept under supervision, but no cases developed.
In addition to the above, information was given about passengers
who had arrived by air from infected areas. These, also,
were kept under observation, without further development.
(ii) Non-Notifiable Diseases.
(a) The relative prevalence of these is set out below, information
being compiled from the school returns.

5.—SUPPLEMENTARY.
(i) Water.
Mr. Bernard W. Bryan, Engineer to the South Essex Waterworks
Company, informs me that Bacteriological and Chemical
Examinations are made of the raw water, of the water in its
various stages of treatment, and of the water going into supply.
Analyses are also made of samples obtained from consumers' taps
in the various parts of the Company's district. A total of about
3,300 examinations were made. All proved to be satisfactory.
Mr. Bryan also states that during the year the supply was
sufficient, and that the water in the district is not plumbo-solvent.
Approximately 0.2 per cent. of the inhabited houses, and 0.02
per cent. of the population of the Borough take their water from
standpipes.