215 
TBE 
Development of Penicillium glaucum in 50 ee. tapwater, pro- 
vided with 0.05 °/, NH, Cl, 0.05 °/, KH, PO, and 0.02°/, Mg SO 
added acid 
| 
Pete 
in mg. | 
Ne 
— 
ao OP WO ND 
d-tartaric 
500 
1000 
l-tartaric 
50 
100 
300 
500 
1000 
Antitartaric 
50 
100 
acid 
acid 
acid !) 
of days. 
2 | 4 
+ +> 
- +> 
- +> 
tl 2 in 
on 
+)% | + 
+, | + 
Hib | + 
+)" | + 
? tE 
2 aU 
+ + 
+ +> 
> + 
+ 4 
Development in stated number 
a 
4° 
2°/, solution thereof, the harmful concentration of the H-ions for 
Penicillium is not yet reached. 
For the rest, these small differences in growth at lower concen- 
trations are somewhat unexpected because the specific character of 
the two anti-podes has been determined by Pasteur first of all with 
Penicillium glaucum. But it may be very well assumed that the 
1) Aspergillus niger gives practically no growth on antitartaric acid. 
