(75) 
already nearly corresponding with that of pure cultures (12/5): the 
anti-bacterial effect of the faeces is thus sufficiently removed by the 
dilution. Besides, something else appears from this Table; after 4 
days the number of cultivable organisms has increased with beyond 
30 millions, but the number of bacteria, found by microscopic count- 
ing, too, is in that time augmented with more than 30 millions. 
We may therefrom deduce that only the cultivable organisms have 
multiplied and that the greater majority of microscopically countable 
bacteria was no more able of propagation. 
Not all faeces, however, display a distinct anti-bacterial action, 
and in Table IX an investigation is referred to, where, directly in the 
faeces themselves, an increase of the cultivable bacteria could be 
observed. 
TABEL IX. Faeces N° 4, placed at 37° C. 
nD l : 5 ADA d : Sn 
eet oes | os o's u 88e8 [es 
oO . zi os 0 Baie! Ge Ss 
~ S n osg ASoaoe EE = Mm 
Periods at pe“ Ss | ates | . B84 | Increase| „ROES | Increase | 2 5 
eo 8 aos ae) Sas, oS es == 2 
“sc en =e oe > as ey Sse | x2 
5 a 2 en S| te EEE ae : 8.8 4:5 ° : os 
ape Ce 3.4 ea ) Base. |) with emee te wikh as 
ra) a BEES ees en seb 2a 
Cs Bs | oes a Sats Ay 
d % en | © a SES ao Bs 
—— 3 : = : 
Direct examinat.) 11.77 33.07 17 .765000 above 79200 above | 224 
9 9 
i} x . 
After 1 day | 19.372 | 36.84 | 27.053003 |\ millions) 9.839000 |" millions) 3 
¢ ‘ ae | eee 
» 3 days | 10.130 | 39.24 | 98.8330C0 8.833000 3 
nne en OE EEE ED ETE NLT PRN IE OE a el 
In these faeces, too, we find the preceding experiment confirmed. 
After one day the number of cultivable organisms has increased 
with more than 9 millions, the total number shows the same rising. 
If all the 17 millions, thus a/so the large number of non-cultivable 
ones, had come to multiplication, we should have found, after 1 day, 
a much greater total number than is now the case; where the 
increase of the total number is again in accordance with that of 
the cultivable number, only the cultivable ones can have propagated, 
The same faeces diluted (Table X) demonstrate the corresponding 
fact; after 3 days the number of cultivable organisms has increased 
with 21 millions, the total number with 20 millions. A slight 
anti-bacterial action appears neither to lack in these faeces: in the 
dilute faeces the number of cultivable bacteria has increased after 
3 days more than in the non-dilute 
