638 
heat showed invariably that there was at a given moment a rather 
great fall in the disinfection velocity (Fig. 8). 
Numbers of 
spores 
1000 
goo 
800 
Numbers of 
spores 
„mm lS 
700 
O45) 1015.20 25-30 
Minutes Minutes 
Fig. 7. Small spores at 90°. Fig 8. Large spores at 90°. 
This result clashes with the reasoning on page 635, which rather 
implied a gradual rise in the value of 4, just as with yeast cells. 
TABLE III. Large spores at 90°. 
Numbers on plates 
Time | Number Starting 
A 5 ik Mean |Dilution, number | logo 
(min)| 4 9 3 4 | cae | per cc. | 1000 
1 940 843 | 826 | 830 | 826 853 75 63915 | 
| | | /; 1000 | 3.000 
3 | 2610 | 2624 | 2600 | 2603 | 2571 | 2602 25. "| 63050." 
6 | Hopi | 501! 431 | 4871 460 | 11 — 5060 18.5, 1.895 
10 | 520; 481 | 492 | 441 , 481 483 | 6 | 2898 | 45 | 1.653 
20 | 586 | 530 | 593 + 554 | 438 | 540 | 1 | 540 8.4 0.924 
| 
| | | | | 
30 | 168.) ADL ADT) salon et 2 146 | 1 146 | 2.3, 0.362 
| | | 
