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21
the West Middlesex was the best, and that distributed by the
Southwark Company the worst.
The water supplied by the Southwark Company was, on
examination, clear on 7 occasions, turbid on 4, and very turbid
on 1. The Lambeth Water Company's was clear on 8 occasions,
and slightly turbid on 4.
Moving organisms were found in the Southwark Company's
water on 5 occasions, and in the Lambeth on 1 only.
Both waters show considerable improvement as compared with
previous years, which is attributed to the more careful treatment
of the water, as regards subsidence and filtration, by the
respective Companies.
METEOROLOGY.*
The mean temperature of the year 1877 at Greenwich was
49°4, which is 0°8 above the averago of 106 years; it was 3°1
above the average in June, but the temperature of the summer
was below the average, and on no day was it higher in the
shade than 88°2. The mean temperature of the three winter
months was 3°6 above the average of 106 years.
There was a downfall of 26.9 inches of rain in 183 out of the
365 days. The average rainfall at Greenwich was 25 3 inches,
so that this amount was 1G inches above the average. The fall
in January was excessive; no less than 4.35 inches fell in 23
days, and produced extensive inundation.

* The above is taken from the Registrar General's Annual Summary.