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35
baths in the Borough should be incorporated in my Annual Report
this year.
" There are two Swimming Baths in the Borough (Porchester
Baths and Kensal Road Baths) each establishment having a large
and a small Bath. The large Baths are open from May to September
and the small Baths are open all the year round. There were
approximately 180,000 attendances during the year (120,000 at
Porchester Baths and 60,000 at Kensal Road Baths).
A high standard of purity of bath water is maintained by
continuous flow through pressure type sand filters, the water being
treated by coagulants to flocculate organic matter, and then chlorinated
to a marginal chlorination standard of 0.2 to 0.5 parts per
million. The alkalinity of the bath water is determined by the use
of soda ash treatment and a pH value of 7.2 to 7.8 is maintained.
Finally the water is aerated and reheated to 76°—78° F. Cleansing
of the sand filters is brought about by a reversal of the flow of water
to break up the solidified sand bed, assisted by rocking the filters
and the use of steam/air agitation. The normal daily consumption
of fresh water added to the bath following filter cleansing equals
approximately one-twenty-fifth of the bath capacity. The swimming
baths are completely emptied, cleaned and refilled once a year."
MASS X-RAY SURVEYS
Dr. G. Z. Brett, the Physician-in-Charge, has kindly supplied
the following details.

Not all of these cases were Paddington residents, although they
were discovered during 1959 in Paddington surveys.
MATERNITY AND CHILD WELFARE.— Following is a list of
London County Council clinics and day nurseries in the Borough
with the times of the sessions of the clinics. Enquiries regarding
vacancies at the nurseries are dealt with by the Divisional Office at
313/319, Harrow Road, W.9.