Collected papers . Time, minutesFig. 12. Disinfection of B. paratyphosus with hot water (Table XIV).(a) Exp. I at 47-2° C. (6) Exp. II at 47-2° C. (c) Exp. Ill at 47-35° C. {d) Staphylococcus pyogenes albus and Staphylococcus pyogenes aureus. Staphylococcus pyogenes albus. The results of two experiments withStaphylococcus albus at 49° C. and 53*05° C. respectively are oiven inTable XV and Fig. 13 ; they show fair agreement with the logarithmiclaw. a o. Time, minutesFig. 13. Disinfection of Staphylococcus pyogenes albus with hot water ^Table XV).(a) Exp. I at 53-05° C. (b) Exp. II. at 49° C. 26
Collected papers . Time, minutesFig. 12. Disinfection of B. paratyphosus with hot water (Table XIV).(a) Exp. I at 47-2° C. (6) Exp. II at 47-2° C. (c) Exp. Ill at 47-35° C. {d) Staphylococcus pyogenes albus and Staphylococcus pyogenes aureus. Staphylococcus pyogenes albus. The results of two experiments withStaphylococcus albus at 49° C. and 53*05° C. respectively are oiven inTable XV and Fig. 13 ; they show fair agreement with the logarithmiclaw. a o. Time, minutesFig. 13. Disinfection of Staphylococcus pyogenes albus with hot water ^Table XV).(a) Exp. I at 53-05° C. (b) Exp. II. at 49° C. 262 Disinfection From analogy with other species one would expect the rate otdisinfection at 53^ C. (Exp. I) to be greatly in excess of that at 49° C.(Exp. II). The experiments were not made at the same time, and itmust be concluded that this form, like Staphylococcus pyogenes aureus,is very variable as regards its resistance to disinfection by hot water. TABLE XV. Disinfection of Staphylococcus pyogenes alhus with hot water. Exp. I, 10. 3. 09. Temperature 53-05° C. Time, minutes = t Amountof sampletaken,drops Numbers counted on plates (agar) Mean Mean no. of bacteria present in 1 drop disinfection mixture, =N 1 ^0 ^^n 5 = to 2 371 393 376 380 190 = Nq 2-279 — 6 5 386 501 459 449 89-8 1-953 •33 8 10 60 88 74 7-4 •869 •47 10 10 9 14 11-5 1-15 •061 Mean •44 •41 Exp. II, 12. 3. 09. Temperature 49 C. 2 = ^0 1 575 513 599 562 562=--N
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