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on the "marginal" principle. The pool water at the Twickenham and Teddington
Pools is turned over once every 6½ hours, whilst that at the Hampton Pool operates on
a 4 hour turnover rate.
Colourmetric tests and water samples at each pool are taken three times daily to
determine free-available/residual chlorine content of the water, the pH values of the
same, and both shallow and deep end water temperatures. Each of the results obtained
are recorded in a standard log'book.
Bacteriological tests of the water at each of the pools and Richmond Baths are made
monthly and, during the past year 38 samples have been taken, of which 31 were satisfactory
and, whilst the remaining 7 were below the recommended standard, repeat
samples in each case have produced satisfactory results.
Richmond Baths (Indoor and Open Air)
The Richmond Baths Establishment, of a "combination" nature, situated in the
Old Deer Park, Richmond, was opened to the public in August, 1966.
The establishment consists of one main Indoor Pool 110' x 42', water capacity of
210,000 gallons and a turnover rate of 3 hours; one Indoor Learner's pool 42' x 24',
water capacity of 17,000 gallons and a turnover rate of hours, and an, Open Air
pool 110' x 42', water capacity of 160,000 gallons and a turnover rate of 4 hours. The
filtration of all pools' water is through Pre-coat filters, and sterilisation is carried out
by chlorine gas treatment on "breakpoint" principle. A system of pool water sampling
and testing is installed and all indications are automatically recorded on graphs. A
plenum heating system is installed and the whole establishment is operated electrically
utilising "off-peak" electricity.
The private baths suite consists of 12 private baths for both ladies and gentlemen
respectively together with the necessary waiting rooms, toilets, etc.
The grounds are landscaped and well laid out and provide some two acres of grass
and banked areas which are available for sunbathing, games, etc."
14. FERTILISERS AND FEEDING STUFFS ACT, 1926
Fifteen samples of fertilisers were taken during the year, five of which were reported
upon by the Agricultural Analyst as being irregular :
Bone Meal
The percentage of nitrogen was 1.4 above the percentage stated on the statutory
statement and this difference was in excess of the limits of variation allowed for this
ingredient. The retailer was notified but, as the excess was not considered to be prejudicial
to the purchaser, no further action was taken.
Dried Blood
The percentage of nitrogen of this sample was 1.7 below the percentage stated on
the statutory statement. The error occurred because of the supplier misinforming the
retailer and an assurance was received from the supplier that in future the correct
information would be given to the retailer.
Growmore
The percentage of nitrogen and phosphoric acid insoluble in water was in excess,
and the percentage of potash below those stated on the statutory statement. There was
doubt as to the source of this supply and as the retailer held no further stocks of the
product no further action could be taken.
Basic Slag
The particulars on the statutory statement were not in the form as required by the
Act. The retailer was notified and the statutory statement was appropriately amended.
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