Dr. Baxter's report on an experimental study of certain disinfectants.

  • Baxter, Evan Buchanan, 1844-1885.
Date:
[1875]
Catalogue details

Licence: Public Domain Mark

Credit: Dr. Baxter's report on an experimental study of certain disinfectants. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    12/42 (page 226)
    Arr-No-6- concentrated oil of vitriol had been introduced, for 52 hours; the edges On Disinfectants, of the bell-glass were ground and cemented to a glass plate. On inocu- by Dr. Baxter. ]ation, the dried points yielded three plump vesicles, exactly similar to those produced on the opposite arm by the three corresponding points which had not undergone any sort of treatment. hSaUons with TIle tlu'ee following tables exhibit the results of the experiments dried vaccine. made with chlorine, sulphur dioxide, and carbolic acid vapour respectively :— Action of Chlorine on Dry Vaccine. No. Duration of Exposure. Number of Vesicles on Arm inoculated with Virgin Points. Number of Vesicles on Arm inoculated with disinfected Points. Remarks. 'The vesicles produced by 1 5 minutes 3 1 the virgin points were all 2 10 „ 3 1 large; those furnished by 3 15 „ 3 2 the disinfected points, _ very small. 4 30 „ 2 0 5 30 „ 3 0 Action of Sulphur Dioxide on Dry Vaccine. Number of Vesicles Number of Vesicles No. Duration of on Arm inoculated on Arm inoculated! Remarks. Exposure. with Virgin with disinfected Points. Points. 1 10 minutes 3 0 2 do. 3 0 3 do. 2 0 4 do. 3 0 Action of Vapour of Carbolic Acid on Dry Vaccine. Number of Vesicles Number of Vesicles No. Duration of on Arm inoculated on Arm inoculated Remarks.] Exposure. noth Virgin with disinfected Points. Points. 1 5 minutes 3 1 No constant difference ob- 2 10 „ 3 3 served between vesicles 3 15 „ 3 1 furnished by carbolized 4 20 „ 3 3 aud those furnished by 5 30 „ 3 2 virgiu poiuts. 6 30 „ 2 0 7 60 „ 3 0 8 60 „ 3 0 One striking result is manifest from this series of inoculations. It is the very marked superiority q£ sulphur dioxide to carbolic vapour and chlorine gas, and this under conditions which seem, above all others, to render the virulent particles least susceptible to destructive influences. It is sufficiently obvious that the quantity of chlorine given oif into a