The changes produced by the growth of bacteria in the molecular concentration and electrical conductivity of culture media / by G.N. Stewart.

  • Stewart, G. N. (George Neil), 1860-1930.
Date:
[1899?]
Catalogue details

Licence: Public Domain Mark

Credit: The changes produced by the growth of bacteria in the molecular concentration and electrical conductivity of culture media / by G.N. Stewart. Source: Wellcome Collection.

    8/22 (page 240)
    EXPERIMENT II. Jan. 4, 1898. PUTREFACTION. DOG’S DEFIBRINATED BLOOD. THREE SAMPLES, A, B AND C, PROM THE SAME DOG. A AND B IN STERILE FLASKS ; C, NOT. A^ojXlOS. A. A (5°)Xl08* B. A (5°)X108. c. Jan. 4. 42.82 41 9. 56.58 37.61 A was opened for the first time to-day, and is laked. “ 11. 60.21 45.02 A and 0 are both completely laked. “ 13. 65.67 63.66 48.32 B was opened for the first time to-day, and is completely laked. “ 15. 75.44 66.09 58.01 “ 20. 90.21 79.96 68.88 “ 28. 101.81 93.12 77.28 Feb. 1. 126.75 A was put in bath at 30°-36° C. 30 hours before this measurement. “ 4. 128.68 99.41 82.71 A, B and C were put in bath at 35° C. to-day. “ 5. 139.64 90.37 “ 7. 183.70 143.47 102.80 Temperature of bath now raised to 40°-43° C. “ 8. 232.57 162.50 115.75 “ 9. 274.05 178.52 124.45 “ 10. 308.02 214.47 147.65 “ 16. 359.58 314.13 232.57 “ 24. 356.04 “ 25. 359.58 381.78 318.87 “ 26. 363.70 390.00 “ 28. 364.23 393.02 338.00 Mar. 2. 360.09 397.96 343.03 “ 3. 403.02 345.37 “ 7. 359.07 397.96 347.26 “ 11. 349.65 “ 22. 399.85 340.27 Apr. 27. 382.93 396.09 343.03 From Jan. 4 to Jan. 31, A, B and C were all kept at room temperature. When A and B were first opened (on Jan. 9 and 13, respectively) neither was found completely sterile. A rod-shaped bacterium was present in both, but there was no putrid odor, although this was very marked in C. After being opened A and B were thoroughly exposed to the air and allowed to putrefy like C.