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31
these conditions appear to have been fulfilled. With the
exception of group 3, the details set out under
"Notes" in that Table make it clear why there were
successions of cases in the households enumerated, the
chief factor being apparently direct transference from
patient to patient through neglect of all precautions.
After eliminating the cases due to imported
infection, those erroneously diagnosed, and all
secondary cases, there remain 33 cases in North and
7 cases in South Paddington, the origins of which were
not traced. These have been examined in various
ways, chiefly as regards water and milk supplies, and
condition of drainage, &c. The results as regards
water supply show that the Grand Junction Company
supplied 10 of the houses in North and 7 in South
Paddington, and the West Middlesex 23 in the North,
and none in the South, but no conclusion can be
drawn from these figures, as nothing is known as to
the numbers of services belonging to the respective
companies in each area. The milk supply was too
varied to account for any of the cases. The results of
the examination of the drains, &c., made after notification
of the cases are, however, more instructive, and will
be found summarised in Table 10. Briefly the outcome
of the tabulation is to show that of the 33 cases in
North Paddington, 5 were reported from houses found
to be in " very good" condition, 3 from houses in
"good," 15 from houses in " bad," and 10 from houses