London's Pulse: Medical Officer of Health reports 1848-1972

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City of London 1951

[Report of the Medical Officer of Health for Port of London]

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Mussels are present in the Estuary but are not gathered to anything like the
same extent as cockles.
Mussels when cooked are so soft that their transport over long distances would
be quite difficult. This, added to the operation of the Shellfish Regulations which
does not permit the sale of local mussels unless cooked in an apparatus approved by
the Port Health Authority, has the effect of limiting the mussel "business to a
strictly local market. Samples are taken periodically for bacteriological examination.
The Oyster trade in the River Roach and its contributary creeks is again making
headway after a long period of stagnation The Ministry of Agriculture and Fisheries
have established an Experimental Station at Burnham on Crouch to study the problems
involved.
There is no restriction upon the area in which the oyster beds are situated,
sampling of the water having revealed nothing -which would constitute a danger to the
public health.
One firm operating in the area has specialised in the import of Portuguese
oysters for re-laying and fattening. Portuguese oysters are a completely different
variety from the Native oysters. They are especially suitable for the summer trade
for which Southend provides a valuable market, as they do not "go sick", that is they
do not start to breed until the water temperature is at least 69°F, It is because
Native oysters "go sick" in simmer that it has become accepted that oysters are only
in season -when there is an "R" in the month.

SAMPLING 1950.

SOURCE OF SAMPLEWHOLE PERIOD 9th Febs1950 - 3rd Jan:1951.SIMMER ONLY. June,July.August,September.
Total SamplesGood and Very GoodFair and ModeratePoor and Very PoorTotal SamplesGood and Very GoodFair and ModeratePoor and Very Poor.
%%%%%%
A.401948112710251716842842
B.191358526161265054218
C.341750103072016319744637
D.331545123761817424741635
E.4011281230174217165291165
F.291138724113814173221073
G.4025922297317163181376
H.3510291440113117212636952
J.351131205741217161376318
K.26145472751914322643535
Totals331123371073510130158231463407246

SAMPLING 1951.

SOURCE OF SAMPLEWHOLE PERIODSUMMER ONLY. June,July,August,September.
Total SamplesProvisional GradingNo of Samples From Which Bacteria Were IsolatedTotal SamplesProvisional GradingNo of Samples From Which Bacteria Were Isolated
Satis- FactoryUnsatis- factoryNone Isolanted.Staph- Aureus.Clostri- Dium Welch 11Bacterium ColiSalmon- EllaSaris- Factory.Unsatis- Factory.None IsolatedStaph- AureusClostri- Dium Welch 11Bacterium Coli.Salmon- Ella.
%%%%
A.494081.6918.424-199-16850.0650.09-26-
B.493673.41326.625-209-1637.51062.510-25-
C.302686.7413.39-212-1190 0320.06-92-
D.388.6817.4241174-17353.0847.011132-
E.453680.0920.028-125-16850.0850.010-33'
F.473268.01532.026-176-16744.0956.012-23-
G.432762.81637214-2315-16637.51062.54-87-
H493571.41428.61811921-16425.01275.08127-
J.483777.01123.025-216.16744.0956.09-72-
K.453782.2817.823-1314-151960.0640.05-37-
Total45134476.210723.721621829311597647.88352.28424144
%%%%-%%%%%-
480.4440.520.647.853.01.2525.727.6

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