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

London County Council 1904

[Report of the Medical Officer of Health for London County Council]

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Table: T able III. -Showing the results as regards the B. coli test of the addition of cress in known quantities directly to liquid culture media both before and also after prolonged washing.

T able III. -Showing the results as regards the B. coli test of the addition of cress in known quantities directly to liquid culture media both before and also after prolonged washing.

Number1 of Sample.Topographical Classification.Chemist's Report Standard.Unwashed Cress.Washed Cress.
10 grammes.1 gramme.10 grammes.1 gramme.
VII. and VIII.A.A.-No recordNo recordNo record
-„ „„ „„ „
-„ „„ „„ „
-„ „„ „„ „
-„ „„ „„ „
IX.C.C.-„ „-„ „
-„ „-„ „
-„ „-„ „
X.d.B.(fl) aginac † +„ „flaginac +„ „
flagag +„ „flagac +„ „
flaginac +„ „flaginac +„ „
XI.D.C.-„ „-„ „
(fl) aginac +„ „flaginac +„ „
-„ „flaginac +„ „
-„ „(fl) (ag) (ac) + SL„ „
III.d.d.d.(fl) (ac) +„ „flaginac +„ „
-„ „flaginac +„ „
flagac +„ „flaginac +„ „
flaginac +„ „fl (ag) ac + SL„ „
I., II. and IV.d.d.d.d.c.No recordNo record--
„ „„ „flaginac +No record
„ „„ „-„ „
„ „„ „flaginac +„ „
„ „„ „flaginac +„ „
„ „„ „-„ „
fl +-fl (ag) +flagac +
fl +flag +-agac +
flaginac +(fl) ag + SLflaginac +-
(ag) ac +---
fl (ag) +---
(ag) inac +flaginac +flagac +flaginac +
flaginac +(fl) aginac +flaginac +flinac +
flag (in) +flaginac +flag +-
flag +flaginac +flagac +-
flag +flaginac +flin +-
--flagac +flag (ac) +
flaginac +flag +-flagac +
flag (ac) +flaginac +ag +-
in +flaginac +(fl) (ag) inac +-
flaginac +flaginac +flagac +-

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* The numbers given in this column correspond with those given in Tables I. and II. with the exceptions noted at foot of
Table II. † The significance of these letters is explained under "methods."