London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Holborn 1948
[Report of the Medical Officer of Health for Holborn Borough]
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15
Bacteriological Examination of Milk.
89 samples of milk were taken during the year, 64 of milk supplied to
schools in the Borough. 2 samples were found to be unsatisfactory, both of
which were supplied by dairymen whose premises were registered outside the
Borough. The Medical Officers of Health of the districts from which the milk
was obtained were notified, in order that investigations might be made.
Monthly Variation of Chemical Composition of Milk, 1948.
| Month. | Number of Samples examined. | Total Solids. Per cent. average. | Solids Non-fat. Per cent. average. | Fat.Per cent. average. |
|---|---|---|---|---|
| January | 17 | 12.37 | 8.77 | 3.60 |
| February | 20 | 12.22 | 8.72 | 3.50 |
| March | 16 | 12.07 | 8.68 | 3.39 |
| April | 16 | 11.93 | 8.67 | 3.26 |
| May | 18 | 12.00 | 8.74 | 3.26 |
| June | 18 | 12.03 | 8.70 | 3.33 |
| July | 18 | 12.17 | 8.71 | 3.46 |
| August | 19 | 12.39 | 8.77 | 3.62 |
| September | 19 | 12.50 | 8.87 | 3.65 |
| October | 18 | 12.74 | 9.01 | 3.73 |
| November | 18 | 12.62 | 8.88 | 3.74 |
| December | 17 | 12.53 | 8.85 | 3.68 |
| Whole year | 214 | 12.29 | 8.78 | 3.51 |
| Legal minimum | — | 11.50 | 8.50 | 3.00 |
These figures approximate closely to those of the previous nine years, averages of which are tabulated below:—
| Year. | No. of samples examined. | Total Solids, (average). | Fat.(average). | Non-fatty solids (average). |
|---|---|---|---|---|
| 1939 | 97 | 12.42 | 3.42 | 9.00 |
| 1940 | 172 | 12.45 | 3.56 | 8.89 |
| 1941 | 124 | 12.63 | 3.73 | 8.96 |
| 1942 | 94 | 12.46 | 3.60 | 8.86 |
| 1943 | 96 | 12.42 | 3.51 | 8.91 |
| 1944 | 100 | 12.29 | 3.48 | 8.81 |
| 1945 | 94 | 12.45 | 3.58 | 8.87 |
| 1946 | 214 | 12.33 | 3.53 | 8.81 |
| 1947 | 216 | 12.36 | 3.52 | 8.84 |
| 1948 | 214 | 12.29 | 3.51 | 8.78 |