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76
The health of all the persons engaged on the
premises of the dairy at Islington was strictly
enquired into, as well as that of their families.
When the epidemic first declared itself, the
housekeepers at Holborn Circus were instructed
in the simplest method of sterilising the whole of
the milk in bulk, immediately on its delivery,
and on the importance of strict attention to
this duty.
I made a chemical analysis and found that
one sample of milk had been partly skimmed
of its butter fat. Bacteriological examination
gave negative results, so far as the Typhoid
bacillus, and Bacillus Coli, were concerned,
but physiological experiments on guinea-pigs
inoculated with cultivations prepared from
another sample, showed conclusively that it
was yielded by a cow suffering from tuberculosis.
Enteric Fever has been frequently spread
through the agency of milk, and especially
cream, and butter milk, in which the Typhoid
bacilli increase with almost incredible rapidity,