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

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Holborn 1937

[Report of the Medical Officer of Health for Holborn Borough]

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Bacteriological Examinations of Milk. The following table shows the results of examinations in 1937:—

Nature of premises where sample obtainedGradeNo. of bacteria per c.c.Minimal amount showing coliform bacteriaPhosphatase testMethylene Blue testEvidence of Tuberculous InfectionSample Letter
SchoolPasteurised16,000...Negative......A
SchoolPasteurised............NoneB
SchoolPasteurised80,000...Slight positive......C
SchoolPasteurised......Slight positive...NoneD
StreetUngraded1,000,0000.00001 c.c..........E
StreetPasteurised3,000Absent in 1 c.c.Negative......F
StreetUngraded24,0000000.1 c.c..........G
StreetPasteurised40,000Present in 1 c.c.Positive......H
StreetPasteurised100,000Absent in 1 c.c..........I
DairyUngraded20,000............L
Milk BarUngraded120,000............R
StreetUngraded...Present in 3 tubes 0.01 c.c. negative.........S
StreetUngraded...Present in 1 tube 0.01 c.c. negative.........V
StreetUngraded45,0000.1 c.c.......NoneW
Milk BarUngraded1,000,000†0.00001 c.c..........X
DairyPasteurised300,000Present in 1 c.c.Positive to slight deg.......Z
DairyPasteurised40,000Present in 1 c.c.Negative......AA
Milk BarUngraded20,0001 c.c..........BB
Milk BarUngraded...Present in 3 tubes 1 c.c....3½ hours...DD
StreetUngraded140,0000.01 c.c..........HH
StreetUngraded300,0000.00001 c.c..........II
Milk BarUngraded7,0001 c.c..........JJ
Milk BarUngraded20,0000.01 c.c..........KK
Milk BarUngraded19,0000.01 c.c..........OO
Milk BarUngraded11,0000.01 c.c..........PP
Milk BarUngraded12,0000 01 c.c..........QQ
Milk BarUngraded8,0001 c.c..........RR
DairyPasteurised41,0001 c.c.Slightly positive......SS
DairyPasteurised82,000Present in 1 c.c.Negative...NoneTT
StreetPasteurised68,000Absent in 1 c.c.Negative...NoneUU
DairyPasteurised98.000Present in 1 c.c.Negative......VV