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25
possible to calculate the shortest holding time that can be
obtained under any circumstances. The photographs show a
holding time test in progress on the H.T.S.T. Ice Cream Plant.
Milk Supplies.
As we approach October, 1954, the date after which all
pasteurised milk must be bottled at the premises at which it is
pasteurised, a noticeable reduction is taking place in the
number of small retailers bottling milk at their premises. The
effect the Food and Drugs (Milk Dairies and Artificial Cream)
Act, 1950, is having on the changing scene in the milk trade is
more apparent when we consider that the number of small retail
bottlers in the borough has been reduced since the Act came
into force from 22 to 4. One result of this change is an increased
demand for bottled milk from the large bottling companies of
which there are two in the borough. At these bottling depots
all pasteurised milk is processed by the modern method of
pasteurisation, namely the high temperature short-time method.
In addition to pasteurised milk, other types, including sterilised
milk, are also produced. At one milk depot a fermented milkmarketed
as "Yoghourt," is manufactured, the demand for which
has increased considerably in recent years.

One sample of tuberculin tested milk which failed to pass
the methylene blue test was reported to the Ministry of Food
and further samples from the same source proved to be satisfactory,
including a sample submitted for biological examination.
In addition 108 formal samples of milk were submitted to the
Public Analyst for chemical analysis, who reported 104 samples
to be genuine. Legal proceedings were taken in two cases,
resulting in a total of £16 8s. 0d. in fines and costs.