View report page

76
Tuberculin-tested Milk. This is similar to the above, but is not necessarily bottled at the
place of production. Of 13 samples examined during 1938, two were satisfactory, one contained
bacillus coliform and two, in addition to containing bacillus coliform, discoloured methylene blue in
four hours instead of 5½ hours, as laid down in the Order. The appropriate action was taken in all
cases.
Tuberculin-tested Milk (Pasteurised). This milk, which is the product of tuberculin-tested
herds, has, as the designation indicates, been pasteurised in accordance with the conditions laid down
in the Order. A maximum of 30,000 bacteria per millilitre is prescribed, and the two samples examined
were very satisfactory, the respective counts being 720 and 6,100 bacteria per millilitre.
Pasteurised Milk. This is milk which has been heated to, and retained at, a temperature of
between 145° F. and 150° F. for at least 30 minutes and then immediately cooled to 55° F. A
maximum of 100,000 bacteria per millilitre is laid down and none of the 91 samples examined during
the year under review exceeded this standard, the average count being 21,440 bacteria per millilitre.
Ordinary Milk. This milk, although treated by heat, is not sold under the designation " Pasteurised,"
and there is, therefore, no bacteriological standard. It is satisfactory to record, however,
that the average count for the 25 samples examined during 1938 was only 38,314 bacteria per millilitre,
the lowest count being 8,100 and the highest 137,330.
In addition to the above, four samples of carton milk, two of raw, and one each of sterilized
and " Jersey " milk were examined bacteriologically and satisfactory reports received.
The London County Council stipulate that all milk supplied to hospitals, etc., under their
control must be pasteurised in accordance with the conditions laid down in the Milk (Special Designations)
Order, 1936. During 1938, seventy-one samples were taken for bacteriological examination as
under:—
Institution, etc. Number of samples taken.
Fulham Hospital 22
Western Hospital 24
Elizabethan Open Air School 3
L.C.C. Schools • 22
Total 71
Fulham Hospital. The average count of the 22 samples examined was 37,284 bacteria per
millilitre.
Western Hospital. The twenty-four samples examined had an average count of 27,197 bacteria
per millilitre. One sample, however, contained tubercle bacilli, but, as noted earlier in this Report,
subsequent samples proved satisfactory.
Elizabethan Open-Air School.—The three samples taken were reported to contain respectively
19,830, 10,960 and 41,500 bacteria per millilitre.
L.C.C. Schools. Twenty-two samples were examined, the highest count recorded being, 63,660
the lowest 3,660, while the average was 27,275 bacteria per millilitre.