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throw doubts on the reliability of the methylene blue test.
Significantly, perhaps, all the unsatisfactory samples reported during
the year were of the "soft" type indicating that some factors as
yet undetermined, but apparently unrelated to the method of manufacture
or the hygiene of the product, are affecting the gradings.
For instance, all the Grade 4 methylene blue samples have, without
exception, yielded low plate counts. This is a clear indication that,
with the reductase test, which in reality is a test for organismal
activity, it is quite possible for a sample to obtain a low grading
of 3 or 4 and yet still be fit for human consumption. Conversely,
it could be possible under similar circumstances for a sample to
obtain a high grading and yet contain b. coli in sufficient quantity
to warrant its classification as unsatisfactory. Only one factor
emerged from this test sampling of "soft" ice cream. All the
unsatisfactory samples were thrown up during the summer period.
So far no definite conclusions have been reached and, whilst
investigations into the vagaries of "soft" ice cream are to continue
to re-assess, in these instances, the true value of the
methylene blue tests or perhaps to indicate other and more
reliable methods, the double check of the plate count will be
continued.
Quantitative Analysis.—Standards for the composition of ice
cream are contained in the Food Standards (Ice-Cream) Regulations,
1959.
No examinations were undertaken during the current year in
connection with quantitative analysis.
Merchandise Marks Act, 1926.—Under the powers conferred
by this Act, Orders in Council have been made prohibiting the sale
or exposure for sale of imported foodstuffs unless bearing an
indication of the country of origin. One hundred and six
inspections were made to secure compliance with the various
Orders but on no occasion was it found necessary to take action
against Vendors.
Blackheath Fair.—At Easter, Whitsun and the August Bank
Holiday, many thousands of Londoners from this and adjacent
Boroughs once again availed themselves of the opportunity
of making a visit to this source of entertainment
Constant supervision of refreshment stalls, etc., was necessary
to ensure that a safe standard of cleanliness was maintained by the