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116
Water.
2 samples of bath water contained the required amount of chlorine,
1 sample of drainage water was free from sewage, and 1 sample was
examined for the nature of the deposit.
Other Samples.
2 samples of Formalin complied with the requirements of the specification;
one sample of insecticide contained 2 per cent. soap and cresols.
5 per cent. turpentine and the remainder water ; one sample of insecticide
contained petroleum and coal tar distillates with 5 per cent. cresylic acid
and citronella oil.
Rag Flock Act.
According to the standard of cleanliness required by the Rag Flock
Regulations, rag flock must not contain more than 30 parts of chlorine
in 100,000 parts of the flock. One informal sample was satisfactory,
the chlorine content being less than 10 parts per 100,000.
Borough Engineer.—-8 samples comprised : Carbolic Powder 3 and Cold
Bitumen 5.
Public Cleansing Officer.—4 samples of Carbolic Powder examined were
satisfactory.
Private Samples.—10 samples consisted of : Jam-invert, Gravy Powder,
Vegetable Extract, Wax Paper, White Powder, Palm Kernel Oil, Cottonseed
Oil, Margarine and Fats (2). All these samples were free from animal fat.
I wish again to express my appreciation of the able assistance given me
in the laboratory by Mr. W. M. Paulley, B.A., F.I.C.
I have the honour to be,
Ladies and Gentlemen,
Your obedient servant,
DOUGLAS HENVILLE,
Borough Analyst.
Chemical Laboratory,
43, White Horse Street, E.1,
May, 1936,